Longsword performance video compilation

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G36E

Baron
A.k.a. Why katanas are nothing special.

Got into an argument on youtube over why katanas do not glow blue and are not sharpened on the light of dawn, then people started throwing videos around. Thought I'd make a compilation of the longsword ones.

Arrow interception
Man cuts an arrow in half as it is fired from 20 yards away.
Sword in video: Unknown 13th century broadsword.

Liechtenauer lightning cut
Demonstrates the Liechtenauer "lightning cut" at relatively low speed.
Sword in video: Albion Swords Brescia Spadona.

Cutting paper and hair
Demonstration by Walter Robins, shows sharpness of a medieval longsword. Includes the "razor sharp" shaving test.
Sword in video: Windlass Steelcrafts Sword of Roven.

Stunt cutting compilation
Cutting tests by Walter Robins, lengthwise bisection of banana, potato, pea pod; cutting a green pea in midair; skinning an asparagus.
Sword in video: Windlass Steelcrafts Sword of Roven.

Cleaving a Deer Carcass
Cutting test, demonstration of the Mittelhau. Carcass has been gutted prior to cutting.
Swords in video: Unknown longsword and Albion Swords Knecht (Kriegsmesser).

Katana vs. Schwert
Cutting test by Stefan Roth, Attempt at cutting an arming sword in half with a katana and a longsword. Katana chips the blade but bends, longsword cuts through but is notched.
Swords in video: Seelenschmiede Katana in Shin ho zume geschmiedet (Possibly), Seelenschmiede Bohrschwert (Possibly), Unknown arming sword.

If you've got any others, feel free to link them.

Night Ninja 说:
Some pretty effortless hewing strokes.

The other videos in that channel are worth a look. While the sparring is not the most technical or refined (or even close to the manuscripts), the intensity and intent are bloody awesome. An instructor I know referred to these videos as 'Polish bashing'. Can't say he's wrong, but they're on the gentle eastern slope of the bell curve of HEMA practitioners so far. :???: Many of the rest of the ****ers seem to be more interested in playing dress-up. :roll:
Begins with zornhau, thrust, draw cut and zwerchau on half a pig carcass. Continues with drills and free-play fencing.
Swords in video: Unknown double ring guard longsword (zornhau), unknown longsword (thrust, draw cut, zwerchau). Misc. federschwert etc.
Night Ninja 说:
Another awesome channel
The drilling videos of this group are highly recommended. Slow and clumsy my left arse cheek. Again, the intensity and intent are superb. The technical side's great too, but that's no surprise because they're performing drills.
Only two actual sparring videos, but involves Liechtenauer longsword fencing set to the tune of the Witcher soundtrack. Blunts used are inordinately heavy at 2+kg (4lb 9oz).
Swords in videos: Feder shaped blunt (2088g, 140cm); Blunt (2040g, 139cm); Federschwert (1690g, 135cm).
Night Ninja 说:
6 videos of fencing and shenanigans. Not much slower than the preceding channel.
Swords in videos: Feder shaped blunts in Schielhau Krumphau, blunts in others.
Night Ninja 说:
Classic zwerchau spam
I wouldn't want to have that guy's joints, but the speed at which he's twitching that thing is fairly impressive.
Zwerchau drill on a pell done by an ARMA practitioner.
Sword in video: Albion Swords Liechtenauer.
 
Of the videos, only the german one was even worth watching; you can cut a carcass in half with a pretty ordinary machete, if you hit the spinal column cleanly, and cutting people up is pretty straightforward; it's that armor stuff that made it a bit more challenging.  Even the German one's not that great; I see serious issues with the way that the test was conducted- for example, how often in combat will a blade be rigidly supported on both ends? 

I honestly think that this is a better comparision of the two as practical weapons, under ideal conditions. 

However, what's missing from this video (and all of your examples), is how longswords and katanas were actually utilized under combat conditions. Longswords were probably more useful in a crush of men-at-arms, where you couldn't get a full-strength swing in very often if at all; there, the flexibility of the blade would have been beneficial and the pommel's use as a secondary arm, along with the shield, was probably a big deal.  Then again, they tested with a bastard sword, and most men-at-arms weren't carrying those into the melee; by the 15th century, they were mainly using shorter, stabbier stuff, if they used a sword at all. 

But conditions of war in Japan rarely included Samurai fighting in the same way; instead, their primary role was as mounted or dismounted archers, with the katana usually playing a fairly secondary role.  So we're basically talking about two tools with radically different jobs; it's not terribly surprising that the katana's actually a better pure weapon, but is fairly poorly adapted for European fighting conditions, and vice versa, that bastard sword would have been damn-all useful if you tried to wear it while riding and shooting a bow, heh.
 
Oh god here we go. Most of these videos show that the longsword is capable of doing the incredibly stupid and mundane things that a katana can do, which does little to give it credit.  If the intention is to show how mundane or stupid those things are, ok then. (such as this demonstrating that tatami are a means to show how a cut is made, not the quality of the sword)

Also, after and including the video xeno posted(which is tooth grindingly bad, almost hilarious) is a half truth at best. Its this sort of echo chamber effect that is most of the reason such misinformation and hypotheses-presented-as-truths are so widely circulated.

As always, Ill let NN weigh in. He is more of a **** about it, which is infinitely more amusing from my position  :twisted:

I cant help myself. The German one is about as helpful as testing different models of cars and seeing how many school children it takes to bring one traveling 30 mph to a stop, then pronouncing the shortest stopping car "the winner." Or atleast that seems the implication.
 
Well if you're trying to show that the katana is "nothing special" then those videos do a decent job I think.

That said, seems a bit of a snarky way to do things. "Europe had cool stuff too" would be nicer than "Japan had nothing special."
 
Therein lies a problem, Papa. If a European sword can do it, its not cool anymore. Or so some would have us believe.
 
xenoargh 说:
Of the videos, only the german one was even worth watching; you can cut a carcass in half with a pretty ordinary machete, if you hit the spinal column cleanly, and cutting people up is pretty straightforward;
Yes, the German one's the best, mostly because Stefan Roth was willing to test his blades to destruction. The others all try not to damage their 300+USD blades or are just demonstrations of skill.
xenoargh 说:
it's that armor stuff that made it a bit more challenging.  Even the German one's not that great; I see serious issues with the way that the test was conducted- for example, how often in combat will a blade be rigidly supported on both ends? 
The trouble with the tests you are proposing is that a plate harness of 4130 steel costs about 13000AUD. Far beyond the reach of the average enthusiast.
xenoargh 说:
I honestly think that this is a better comparision of the two as practical weapons, under ideal conditions. 
:roll:
Your posting priveldeges are endarger of being revoked. Please explain why a USMC drill instructor's unresearched opinion is more valid than testing under controlled circumstances.
xenoargh 说:
However, what's missing from this video (and all of your examples), is how longswords and katanas were actually utilized under combat conditions. Longswords were probably more useful in a crush of men-at-arms, where you couldn't get a full-strength swing in very often if at all; there, the flexibility of the blade would have been beneficial and the pommel's use as a secondary arm, along with the shield, was probably a big deal.
I'd love to see anyone get a longsword or katana's performance under combat conditions. Mind walking into Iraq and filming the Americans as they charge the Iraqi lines? It's not like swords are obsolete or anything. :roll:
xenoargh 说:
Then again, they tested with a bastard sword, and most men-at-arms weren't carrying those into the melee; by the 15th century, they were mainly using shorter, stabbier stuff, if they used a sword at all. 
Actually, they went into longer, thinner and stabbier as time and armour development continued then went back to shorter and slashier after the high medieval era. Blade cross-sections went from the lenticular (X - XIV) to flattened diamond (XV to XVIIIe) to hexagonal (XIX to XXII). Blade length was longest during the 1410~1510 period, maxing out at 42 inches.
xenoargh 说:
But conditions of war in Japan rarely included Samurai fighting in the same way; instead, their primary role was as mounted or dismounted archers, with the katana usually playing a fairly secondary role. So we're basically talking about two tools with radically different jobs;
Yes, that's pretty much why the katana's curved. It's essentially a saber, a dedicated cavalry weapon.
xenoargh 说:
it's not terribly surprising that the katana's actually a better pure weapon,
Nope. The point is that there is no such thing as a better "pure weapon".
xenoargh 说:
but is fairly poorly adapted for European fighting conditions, and vice versa, that bastard sword would have been damn-all useful if you tried to wear it while riding and shooting a bow, heh.
Last I recall the primary reason for curved blades on horseback was to to maximize the damage from a cut, I don't see how a sword that is just as long is going to be any less cumbersome if it's curved.

Devercia 说:
Oh god here we go. Most of these videos show that the longsword is capable of doing the incredibly stupid and mundane things that a katana can do, which does little to give it credit.  If the intention is to show how mundane or stupid those things are, ok then. (such as this demonstrating that tatami are a means to show how a cut is made, not the quality of the sword)
That was the intention, yes. Keep hearing about how "zOMG the katana can cut through steel!1one1eleventyone!!1". These are for the times when someone says "Longswords are blunt objects".
Devercia 说:
I cant help myself. The German one is about as helpful as testing different models of cars and seeing how many school children it takes to bring one traveling 30 mph to a stop, then pronouncing the shortest stopping car "the winner." Or atleast that seems the implication.
:lol:. Nice analogy, but I don't think Roth was going for the "least worst" approach.
 
Good grief, thanks AK, I was gonna do that.

xeno, usually if we talk about a longsword, we refer to what you're calling a bastard sword. What you call a longsword is probably an arming sword. Just btw, I disagree with many other things you said, but AK addressed most of them.


Anyways, AK, the original post - some good videos. I'll use this. :smile:
 
AK47 说:
Devercia 说:
Oh god here we go. Most of these videos show that the longsword is capable of doing the incredibly stupid and mundane things that a katana can do, which does little to give it credit.  If the intention is to show how mundane or stupid those things are, ok then. (such as this demonstrating that tatami are a means to show how a cut is made, not the quality of the sword)
That was the intention, yes. Keep hearing about how "zOMG the katana can cut through steel!1one1eleventyone!!1". These are for the times when someone says "Longswords are blunt objects".
I've actually read comments using the video I linked as proof longswords were blunt, arguing that a blunt swords nominal cutting power was evidence that longswords could have been blunt and still functional (but obviously inferior to the katana, did you see how hard he had to swing?).
Devercia 说:
I cant help myself. The German one is about as helpful as testing different models of cars and seeing how many school children it takes to bring one traveling 30 mph to a stop, then pronouncing the shortest stopping car "the winner." Or atleast that seems the implication.
:lol:. Nice analogy, but I don't think Roth was going for the "least worst" approach.
I'm mostly pointing out the fact that playing rockem sockem robots with swords is not only abuse because it is destructive, but because it is testing a quality beyond the point of reason. It almost inspires the idea that a confrontation between a knight and samurai would be first decided by whos sword broke first. I guess i'm criticizing the viewer of the video instead of the video itself though.

You could also post a list of "videos that are stupid" and the reasons why. You will inevitably be presented half baked arguments based on them so you might as well be preemptive.
 
Devercia 说:
I've actually read comments using the video I linked as proof longswords were blunt, arguing that a blunt swords nominal cutting power was evidence that longswords could have been blunt and still functional (but obviously inferior to the katana, did you see how hard he had to swing?).
Not quite sure what you mean, but if you're trying to say that people have tried to use that video as proof that longswords are blunt, you could just point out how Clements specifically states it's been blunted. It's even in the video title.
Devercia 说:
I'm mostly pointing out the fact that playing rock'em sock'em robots with swords is not only abuse because it is destructive, but because it is testing a quality beyond the point of reason. It almost inspires the idea that a confrontation between a knight and samurai would be first decided by whose sword broke first. I guess I'm criticizing the viewer of the video instead of the video itself though.
The part I linked was mostly a durability test and related to an earlier scene where they showed a Kill Bill clip where they showed the Bride slicing a sword to bits with a katana. You could call it Mythbusters with blades, if it makes you feel better.
Devercia 说:
You could also post a list of "videos that are stupid" and the reasons why. You will inevitably be presented half baked arguments based on them so you might as well be preemptive.
Unfortunately, I think Spike, the History Channel and National Geographic broadcast too much crap to place in one thread. And that's just the ones I've seen.

Merlkir 说:
It always pains me when someone posts that ridiculous katana vs. broadsword video. Where the poor broadsword guy struggles to cut the mat once using both hands, while the agile samurai cuts it twice.

These videos should be a reply to that:
James Williams is a cool guy, eh cuts with both swords and doesn't **** on either.
 
AK47 说:
Got into an argument on youtube over why katanas do not glow blue and are not sharpened on the light of dawn, then people started throwing videos around. Thought I'd make a compilation of the longsword ones.

Been there, done that. Wanking's usually more fruitful, at least you have a little something to show for it after you're done. :lol:

AK47 说:
Man cuts an arrow in half as it is fired from 20 yards away.
Sword in video: Unknown 13th century broadsword.

Not a particularly impressive test, to be honest. The 'katana cutting arrow' **** was similarly bull****, the bow wasn't drawn to anywhere near full draw. Mostly this is just a measure of the reflexes of the user, but many weeaboo wankers tend to confuse and conflate that with the superlative abilities of the object of their furious fapping.

AK47 说:
Demonstrates the Liechtenauer "lightning cut" at relatively low speed.
Sword in video: Albion Swords Brescia Spadona.

Ironically, this is a Japanese test cutting pattern. AFAIK, Michael Edelson does kenjutsu (Toyama ryu) and battojutsu. The use of a Japanese style as 'frog DNA' for HEMA reconstruction and interpretation shows, I think. It's not a wrong approach, I'm just reflexively biased against anything Japanese now. :razz:

AK47 说:
Demonstration by Walter Robins, shows sharpness of a medieval longsword. Includes the "razor sharp" shaving test.
Sword in video: Windlass Steelcrafts Sword of Roven.

While they certainly have the potential to be stupidly sharp, they were rarely sharpened to that degree AFAIK, the edge durability is utterly horrendous. You can chip the edges on bone, and a chipped edge is much worse at this whole cutting business. As you can see, hewing strokes can still inflict fair amounts of damage, but the results are markedly worse.

Also, the bloody problem with that video is that the sword he's using is a replica, and not a particularly accurate one. It tells us nothing about the edges on extant swords. Considering the context, it's also very likely that he also performed an aftermarket sharpening job on the sword. This is likely to escape the average katana plonker, but you have to bear that in mind if you want to use that as evidence.

AK47 说:
Cutting tests by Walter Robins, lengthwise bisection of banana, potato, pea pod; cutting a green pea in midair; skinning an asparagus.
Sword in video: Windlass Steelcrafts Sword of Roven.

Whether he can do that consistently is still up for debate though. :razz:

Going to use this to show up a weeaboo who insists that the clip of someone cutting BBs and cucumbers is proof that the katana is awesome. :lol:

In all seriousness, it's the wielder, not the weapon.
AK47 说:
Cutting test, demonstration of the Mittelhau. Carcass has been gutted prior to cutting.
Swords in video: Unknown longsword and Albion Swords Knecht (Kriegsmesser).

Big ****ing swing cuts through target, nothing to see here, really.

A lot of people in the historical fencing community completely change their cutting mechanics when doing test cutting just to cut through the target medium. That's stupid, you're optimizing your technique for the test and not the actual context in which it's supposed to be used.

AK47 说:
Cutting test by Stefan Roth, Attempt at cutting an arming sword in half with a katana and a longsword. Katana chips the blade but bends, longsword cuts through but is notched.
Swords in video: Seelenschmiede Katana in Shin ho zume geschmiedet (Possibly), Seelenschmiede Bohrschwert (Possibly), Unknown arming sword.

I'd say it's more of a test of edge durability and structural strength than an attempt at hewing the damned sword in half. The longsword didn't actually cut through, it took a fairly large chunk out of the target, which then snapped from the force of the strike. While the chip doesn't look that big, I wouldn't want to rely on that sword for anything particularly important. As for the catastrophic failure of the katana, what I'm guessing happened is that the massive chip in the edge removed a large proportion of the structural support for the softer spine, which then proceeded to fold and torque in the manner that you saw.

There's a fairly good demonstration of test cutting with the swords earlier in that video, and that's arguably more valuable to what we want to do.

The main reason this test has any value whatsoever is that Stefan Roth is an acclaimed swordsmith and one of the few in the West who can make katana worth a damn. It's not in his interests to bias the test. As with any infotainment, take the results with a ladle of salt.

xenoargh 说:
Of the videos, only the german one was even worth watching; you can cut a carcass in half with a pretty ordinary machete, if you hit the spinal column cleanly, and cutting people up is pretty straightforward; it's that armor stuff that made it a bit more challenging.

And that's it right there. A good knife, pound-for-pound, is likely a much better cutting implement than any sword. Whether it's a better fighting implement is up for debate.

It's not just the armour, it's the fact that you're trying to cut up another person who's likely trying to do the same to you. It's relatively easy to hit people, it's bloody difficult to not get hit, and being able to hit people at will without getting hit in return means that you're a ****ing beast and I'll pay for a plane ticket to attend one of your seminars.

xenoargh 说:
Even the German one's not that great; I see serious issues with the way that the test was conducted- for example, how often in combat will a blade be rigidly supported on both ends? 

Not very, unless you're catching a mordschlag with a halfsword guard, and even then you'll yield a little and ground out the impact. The test, however, was intended to show that the katana is not some superlative sculpture of steel. It's another bloody sword, and it will act within the limits of its design.

xenoargh 说:
I honestly think that this is a better comparision of the two as practical weapons, under ideal conditions. 

What the others said. That video is utter bollocks. Good infotainment for the ignorant, perhaps, but anyone with the slightest amount of knowledge on historical arms and armour and their methods of use or a scientific background should be rolling their eyes and/or raging.

xenoargh 说:
However, what's missing from this video (and all of your examples), is how longswords and katanas were actually utilized under combat conditions.

That's bloody difficult to test, isn't it?

xenoargh 说:
Longswords were probably more useful in a crush of men-at-arms, where you couldn't get a full-strength swing in very often if at all; there, the flexibility of the blade would have been beneficial and the pommel's use as a secondary arm, along with the shield, was probably a big deal. 

Then again, they tested with a bastard sword, and most men-at-arms weren't carrying those into the melee; by the 15th century, they were mainly using shorter, stabbier stuff, if they used a sword at all. 

There may be some confusion in terminology here. It'd help if you defined what you're referring to with 'longsword' and 'bastard swords'. They're usually used interchangeably by enthusiasts; 'longsword' is the D&Dism for a knightly arming sword.

The length of longswords really didn't change all that much. Examples range from ~40 to 50+ inches, though at the top end it's hard to define whether it's a longsword or a 'true' two-handed sword. Different fighting systems have different preferences for sword lengths too. IIRC, the longswords depicted in Fiore and Talhoffer come up to about the sternum, whereas the civilian swords in the Goliath fechtbuch are markedly longer.

Also, what AK47 said. As plate armour improved, longswords were increasingly optimized for armour penetration/circumvention with the thrust because cuts really do bugger all against a man-at-arms in plate harness. The designs incorporated immensely stiff spines (efficacy in the thrust) and very acute points (seeking gaps and penetrating mail voiders). Hollow ground blades put in an appearance around this time, and it's not much of a stretch to imagine them as an attempt at the ultimate compromise. This sophisticated understanding of mass distribution and manipulation of blade geometry across the length of the sword is characteristic of extant European weapons. This article is a good primer.

AFAIK, the Japanese tended not to mess around with mass distribution as much. Most of their designs have minimal changes in blade profile and distal taper. They did pay considerably more attention to the geometry of the edge and the faces of the blade. Read this and this for more information.

As always though, the primary arm of the knight was a polearm, whether it be a lance or a pollaxe. The sword was always a sidearm, which is why it gets a much higher profile in a civilian context. Also, it's believed that instruction in the use of the longsword (along with wrestling) served as the kinesthetic foundation for further progress in the martial arts.

xenoargh 说:
But conditions of war in Japan rarely included Samurai fighting in the same way; instead, their primary role was as mounted or dismounted archers, with the katana usually playing a fairly secondary role.

In later periods, samurai were used as heavy infantry to reinforce ashigaru blocks and (IIRC) shock cavalry. The whole 'polearms are primary' schtick still applies here, though their deployment in those roles would've given them far more opportunities to use their sidearms.

xenoargh 说:
So we're basically talking about two tools with radically different jobs; it's not terribly surprising that the katana's actually a better pure weapon, but is fairly poorly adapted for European fighting conditions, and vice versa, that bastard sword would have been damn-all useful if you tried to wear it while riding and shooting a bow, heh.

Agreed with everything except the conclusion. It's not a 'better pure weapon' in any manner, it's just designed with a different mindset and optimized for completely different contexts. In the end though, they're both just swords, and enthusiasts need to recognize that neither of them are capable of performing beyond design and material limitations.

Knights didn't seem to have much trouble wielding their swords on horseback. :razz:

~

A few more clips.

Some pretty effortless hewing strokes.

The other videos in that channel are worth a look. While the sparring is not the most technical or refined (or even close to the manuscripts), the intensity and intent are bloody awesome. An instructor I know referred to these videos as 'Polish bashing'. Can't say he's wrong, but they're on the gentle eastern slope of the bell curve of HEMA practitioners so far. :???: Many of the rest of the ****ers seem to be more interested in playing dress-up. :roll:

Another awesome channel

The drilling videos of this group are highly recommended. Slow and clumsy my left arse cheek. Again, the intensity and intent are superb. The technical side's great too, but that's no surprise because they're performing drills.

Yet another one

WYSIWYG.

Classic zwerchau spam

I wouldn't want to have that guy's joints, but the speed at which he's twitching that thing is fairly impressive.

~

Note that many of the Japanese/Korean test cutting competitions are bollocks. As mentioned in the 'niku' article, many practitioners optimize their swords for the contest. These razor-sharp, leaf-thin swords are excellent for showing off and dicing tatami, but they'll fail catastrophically at the first bit of abuse. It's usually easy to spot these contests from a mile away. If you see someone in poofy pants dancing from target to target like Taz on a sugar high, that's probably it.
 
AK47 说:
Devercia 说:
I've actually read comments using the video I linked as proof longswords were blunt, arguing that a blunt swords nominal cutting power was evidence that longswords could have been blunt and still functional (but obviously inferior to the katana, did you see how hard he had to swing?).
Not quite sure what you mean, but if you're trying to say that people have tried to use that video as proof that longswords are blunt, you could just point out how Clements specifically states it's been blunted. It's even in the video title.

Oh, you understand exactly what I mean. You doubt because it sounds too stupid. It is that stupid. That pretty much sums up the level of faith over reason you might encounter, that they would make such arguments on the shakiest of grounds, and for worse, find them convincing.

@QL welcome to the group. Try not to fall too much in love or you will end up like those "We needuh tuh be proud ovour marshal heratuge!" people, who are just as annoying as the katana people.
 
Devercia 说:
@QL welcome to the group. Try not to fall too much in love or you will end up like those "We needuh tuh be proud ovour marshal heratuge!" people, who are just as annoying as the katana people.

Oh gods yes. Those ****ers come across as having massive penis insecurity. You don't need to put down another culture's martial heritage to make your own look good when it can already stand on its own merits.
 
Of course. I just never seen what the actual longsword stuff looked like, and I think it is pretty awesome.
 
R. Lee Ermey saying that a Japanese Katana is more powerful than a longsword? He didn't really even look like he was in his comfort zone in the video, he was all "What do I do with this? Doesn't feel like a gun to me!", and swinging these weapons very brutishly and ungracefully. I honestly watch all these videos of white people saying the Longsword is better and am actually seeing "My swords better than yours! It's EUROPEAN!!!" And then watching the ones of the Katanas and all I'm actually seeing is "My sword's better than yours! It's ASIAN!!!!!".

But R. Lee Ermey? Demonstrating the effectiveness of using a Katana or Longswords as a can opener and showing the katana as being slightly better than the longsword? I'm still kind of shocked. I can't honestly see any bias at all in that video. Sorry guys, never thought I'd say it, but maybe a Katana made with modern steel techniques is better than the Longsword.

EDIT: And I'll go ahead and make it clear AK-47, since you are calling people out it seems. The fact that the test was done with little research and with little experience with either weapon, and probably any weapon which doesn't involve gunpowder, actually provides more evidence to their claims in this case. I don't care if some sensei can cut 6 people in half while not even straining cause of how skilled he is in the effective use of a Katana. I don't care that some sword enthusiast or martial artist can destroy the opposite sword with the sword they are supporting a claim about. All I care about is what happens when some untrained guy like me swings one of these weapons. How effective would they be? Which should I be more inclined to purchase to have a great cutting weapon? That's all I care about.
 
Pierce Elliot 说:
All I care about is what happens when some untrained guy like me swings one of these weapons. How effective would they be? Which should I be more inclined to purchase to have a great cutting weapon? That's all I care about.

does not compute

Pierce Elliot 说:
But R. Lee Ermey? Demonstrating the effectiveness of using a Katana or Longswords as a can opener and showing the katana as being slightly better than the longsword? I'm still kind of shocked. I can't honestly see any bias at all in that video. Sorry guys, never thought I'd say it, but maybe a Katana made with modern steel techniques is better than the Longsword.

The bias is in the presentation of the show. If they made a segment about a katana, then they will not be inclined to show it sucking in comparison to something else, especially when they go on about how badass it is.

Beyond the bias and more to the point is the tests they performed were outside of the intended use of either sword, or performed in a stupid way. They even went so far as to suggest that only katana's uses diagonal cuts. It is also like my safe car analogy.
 
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