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Numberphile - The Fatal Flaw of the Enigma Code Machine

radx says...

Well, they wanted to use a single machine for both encoding and decoding of messages, so the use of a reflector to channel the signal right back through the rotors strikes me as rather pragmatic.

What bothers me is that they relied on "security through obscurity".

The sheer number of possible settings with 3 (4) rotors of a random configuration, each with adjustable rings, plus a plugboard with a variable number of connections -- that's a metric fuck-ton of permutations. But the rotors had fixed wiring and were limited in number. As soon as the Allies got their hands on a set of rotors, the possible number of settings was reduced radically. And the number of connections on the plugboard was standardized to 10 in '41.

Now, what if they had replaced one of the fixed-wiring rotors with a sort of pluggable rotor disc, a rotor that could be reconfigured on site within a minute? That would have screwed the boys at Bletchley Park, wouldn't it? Instead of 60 combinations for 3 out of 5, you'd have 20*26! (2 out of 5 and one random). Have it reconfigured daily, just like the starting positions, and brute force would have required much more effort.

It would still have been vulnerable, given the reflector issues, the nonsensical guidelines for the plugboard, the need to transmit settings, the vast numbers of codebooks, etc. But the numbers would have been more to their favor.

Numberphile - The Fatal Flaw of the Enigma Code Machine

Check Out this Football Player!

bcglorf says...

The reality is unfairly that testosterone does give males a huge athletic advantage when it kicks in. Similarly, most professional level sports are extremely dependent on athletic ability. Speed is included in that. There is a reason that the male world records for every sprint are faster than those for females. That reason is genetics and it doesn't care about political correctness or being fair.

In HS our senior girls basketball team had much better game sense, court awareness and overall basketball IQ, than the boys junior team. Those of us on the senior guys team were getting tired of the lack of respect the junior guys were showing for the senior girls and so we arranged a game between them. Knowing how much smarter and aware the girls were on the court we figured it'd be very humbling for the young guys to get beat. We were unpleasantly surprised to watch the younger guys simply running circles around the girls from one end of the floor to the other. They were just plain faster, a lot faster, and all the smarts in the world just didn't make up that difference.

It may not be fair, but that's the way it is. If smarts could make the difference, Michael Jordon would still be getting better every year, but realistically as age cuts into his athleticism smarts just aren't enough anymore and the torch is passed on to those in their prime.


>> ^Sepacore:

>> ^Stu:
>> ^Sepacore:
There is no reason a female couldn't achieve the same at teen or pro level. Speed and balance (and timing) is all it takes to be highly competitive.

There's a huge reason. If a female were to play in college or some how make it to the professional level. She may have tons of skill and balance like you say, she might even be the next Barry Sanders, but even he got hit. you put a 140 pound-150 pound girl in at running back, she will get injuries that would end the career as soon as it starts. Quickness is a lot, but men's natural ability to have that extra muscle and padding is why they keep men and women in different leagues.

If we were focusing entirely on brute-force forms of football, I agree. Except I wasn't, I was thinking more in the direction of how she could continue to utilize her honed skills.
I'm not disputing that males have a significant muscle advantage for handing out and taking impacts, but nor was I forgetting there are multiple versions of football, given that I loosely referenced such as a precursor to my point. My statement was an alternative to the 'testosterone wins everything' view.
To clarify, I specifically had Touch Football in mind when stating there would be no reason females couldn't effectively play with men post-puberty.

Check Out this Football Player!

Sepacore says...

>> ^Stu:

>> ^Sepacore:
There is no reason a female couldn't achieve the same at teen or pro level. Speed and balance (and timing) is all it takes to be highly competitive.

There's a huge reason. If a female were to play in college or some how make it to the professional level. She may have tons of skill and balance like you say, she might even be the next Barry Sanders, but even he got hit. you put a 140 pound-150 pound girl in at running back, she will get injuries that would end the career as soon as it starts. Quickness is a lot, but men's natural ability to have that extra muscle and padding is why they keep men and women in different leagues.


If we were focusing entirely on brute-force forms of football, I agree. Except I wasn't, I was thinking more in the direction of how she could continue to utilize her honed skills.

I'm not disputing that males have a significant muscle advantage for handing out and taking impacts, but nor was I forgetting there are multiple versions of football, given that I loosely referenced such as a precursor to my point. My statement was an alternative to the 'testosterone wins everything' view.

To clarify, I specifically had Touch Football in mind when stating there would be no reason females couldn't effectively play with men post-puberty.

Police Fire On Men Women and Children w/ Non Lethal Rounds

quantumushroom says...

The problem with your riposte is that doesn't address my comment. The "justice" of a shooting by police where the facts are not yet known is not the concern of this sift. An angry mob outnumbering cops, say, 10 to 1, leaves cops with little option but to defend themselves from being killed. Or do you expect them to let mobs simply kill them?

A mob is not a gaggle of angry but thoughtful/idealistic/rational individuals, it's a "monster" with its own appetites, savage and anonymous. Witness riots by fans of sports teams that have won.

Do angry mobs run into burning buildings? Do they try to pile in to an ambulance while EMTs are attempting to load a stretcher? Then why the approval of fking with police trying to do a job?

The facts surrounding this shooting have yet to come to light.

Ignorance is expecting perfection from any human being, including cops.


>> ^poolcleaner:

>> ^quantumushroom:
"Hey, I just got a great idea, let's all form an angry mob and go scream at police, even though we have no idea what the hell's going on. We do know some guy was shot and killed. We have no idea why he was running from police, whether he threatened police with deadly force or had just killed someone else--hell, we don't have context for any of this--all I know is I'm with this mob screeching at police. Bring the kids, they'll want to see this!"

That's bullshit. It doesn't matter if the people here were ignorantly lead to believe a lie about what they were protesting or if they were just plain wrong and supported a radical ideal. We shouldn't do this in America where even the ignorant like yourself are protected. We should support those with differing opinions with a dialog, not brute force. You and those in political office that support your fucked up vision of the world are the reason we're in this in the first place.

Police Fire On Men Women and Children w/ Non Lethal Rounds

poolcleaner says...

>> ^quantumushroom:

"Hey, I just got a great idea, let's all form an angry mob and go scream at police, even though we have no idea what the hell's going on. We do know some guy was shot and killed. We have no idea why he was running from police, whether he threatened police with deadly force or had just killed someone else--hell, we don't have context for any of this--all I know is I'm with this mob screeching at police. Bring the kids, they'll want to see this!"


That's bullshit. It doesn't matter if the people here were ignorantly lead to believe a lie about what they were protesting or if they were just plain wrong and supported a radical ideal. We shouldn't do this in America where even the ignorant like yourself are protected. We should support those with differing opinions with a dialog, not brute force. You and those in political office that support your fucked up vision of the world are the reason we're in this in the first place.

Honest Movie Trailers - "Titanic 3D"

MonkeySpank says...

Those are all anatomically correct descriptions of you laughing yourself to shitz, but did you climactic instead of climatic? Seriously, I don't need to be rated for this comment. I am just curious...


>> ^kceaton1:

>> ^Boise_Lib:
Ah, shit--you mean they drown in the end?

IN 3D!!!!

edit-

I have to add...that these trailers are killing me. I'm fairly certain I've disconnected my esophagus from it's muscle connections to the interior and exterior walls of the chest cavity, as I'm in great pain due to my laughing. I'm certain that my vocal chords are also on the verge of spilling outward--inside out, as it were, and falling into my stomach where they will be digested as I writhe in pain; hopefully as I'm still watching more of these trailers at the moment of this horrendous, but part and parcel event that must be paid when it comes to true comedy--yet still as the just previous moment had occurred the climatic conclusion is yet to be finished--so as the video and sound trickle into my helpless mind the brute humiliating force of my laughing will be unattaching my retinas and blood vessels will begin to pop as I finally reach what comedians and entertainers aspire to instill in their audience the near opium maxim, that says that I may have a stroke at any second and die: the oxygen deprivation moment of laughing Zen. I love them, I love their trailers. So does my doctor and the hospital's chief surgeon.
P.S.- I just had to add something over the top... Sorry for the two upvotes if you hate my cavalcade of craziness edit .

Hong Kong Airlines Wing Chun Training

chingalera says...

>> ^Jinx:

I did a little Ju Jitsu. I'd expect the throws would be completely useless in a confined space. The knowledge of how to escape a choke hold or how to effectively disarm an opponent would probably be quite useful though, as would arm locks etc. Even comprehensive martial arts training can only do so much and I imagine when you have no room to move then brute force and weight advantage matters more.
The fact they chose Wing Chun seems to me to have more to do with PR than safety. Its a elegant martial art and it fits the image, but I wonder if there are simple more effective techniques that would probably give them better self defence.


Maybe Krav Maga? Bruce Lee did ok with his take on Wing Chun.

Hong Kong Airlines Wing Chun Training

Jinx says...

I did a little Ju Jitsu. I'd expect the throws would be completely useless in a confined space. The knowledge of how to escape a choke hold or how to effectively disarm an opponent would probably be quite useful though, as would arm locks etc. Even comprehensive martial arts training can only do so much and I imagine when you have no room to move then brute force and weight advantage matters more.

The fact they chose Wing Chun seems to me to have more to do with PR than safety. Its a elegant martial art and it fits the image, but I wonder if there are simple more effective techniques that would probably give them better self defence.

Honest Movie Trailers - "Titanic 3D"

kceaton1 says...

>> ^Boise_Lib:

Ah, shit--you mean they drown in the end?

IN 3D!!!!


edit-


I have to add...that these trailers are killing me. I'm fairly certain I've disconnected my esophagus from it's muscle connections to the interior and exterior walls of the chest cavity, as I'm in great pain due to my laughing. I'm certain that my vocal chords are also on the verge of spilling outward--inside out, as it were, and falling into my stomach where they will be digested as I writhe in pain; hopefully as I'm still watching more of these trailers at the moment of this horrendous, but part and parcel event that must be paid when it comes to true comedy--yet still as the just previous moment had occurred the climatic conclusion is yet to be finished--so as the video and sound trickle into my helpless mind the brute humiliating force of my laughing will be unattaching my retinas and blood vessels will begin to pop as I finally reach what comedians and entertainers aspire to instill in their audience the near opium maxim, that says that I may have a stroke at any second and die: the oxygen deprivation moment of laughing Zen. I love them, I love their trailers. So does my doctor and the hospital's chief surgeon.

P.S.- I just had to add something over the top... Sorry for the two upvotes if you hate my cavalcade of craziness edit .

messenger (Member Profile)

Unbelievable Shaolin Monk Speed

quantumushroom says...

Any martial training lacking combat realism is useless OR a sport. Krav Maga teaches to never stop fighting and use any weapon. It initiates the adrenalin dump, and gets people used to being hit, even wearing protective gear.

I respect Master's dedication but the rest us won't spend decades and thousands learning how to imitate a drunken animal for a fight with an excellent chance of never taking place.

I submit: not even a martial arts "expert" can subdue more than 3 attackers at a time unless he has some kind of weapon. A guy with zero training hopped up on adrenalin and wielding a knife has an excellent to even chance of killing or severely wounding Master Squirrel.


>> ^vaire2ube:

And any fighting style where you're not actually hurting the opponent is worth ?? Its all just show. The comment above about the people who know being dead? Yea.
If these maneuvers were completed, pain or death would be inflicted. This is perfection not brute strength.
Ask Bruce Lee sometime if he can hurt you

Unbelievable Shaolin Monk Speed

vaire2ube says...

And any fighting style where you're not actually hurting the opponent is worth ?? Its all just show. The comment above about the people who know being dead? Yea.

If these maneuvers were completed, pain or death would be inflicted. This is perfection not brute strength.

Ask Bruce Lee sometime if he can hurt you

Everything Israel Is Saying About Iran Now... We Said About

longde says...

Are the leaders in Iran, for all the rhetoric, rational? I tend to think they are (at least as rational as the Israelis), and believe they are seeking a nuclear deterant, not to destroy Israel.

I think Isreal has to learn to be more diplomatic toward its neighbors, and stop leaning on brute force, their nuclear arsenal, or superpower sponsors.

Heaviest deadlift ever (1015lb) - Benny Magnusson

ghark says...

>> ^charliem:

The type of lift in this video is the only kind of lift youll ever need...it works every single fucking muscle you have, even the ones in your jaw!!


Exactly! Best exercise ever, and imo of the three powerlifting 'lifts' (bench press, squat and deadlift) this is the most important because it has by far the least potential for cheating.

There are dozens and dozens of records broken every year in various categories and types of powerlifting - e.g. raw, single ply, double ply, knee wraps allowed, knee wraps not allowed, wide stance low-bar vs. narrow stance high-bar (position of the bar on your neck). But with deadlifting you just have to stand there and rip the weight off the floor with your brute man strength, the guys that have the biggest dead-lifts can truly considered to be pure athletes alongside the olympic lifters, and Benny is the strongest to have ever lived.

Plus he's from Iceland, so his Viking great grand-parents probably burnt down my pussy great parents village at some point, what a guy.

For anyone that cares, a deadlift suit simply adds some tension at the bottom of the lift, a bit like having a spring assisting you with the start of the lift - a good deadlift suit probably adds about 30-40 lb's to your lift, but that is debatable.



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