Do you think a guy challenging someone who is much stronger than him makes him stupid or brave?

They're not mutually exclusive.

Maybe brave enough to be stupid, or stupid enough to be brave.

Depends on the context as to why he's doing it. A weaker man challenging a stronger one to protect his kid is a damn hero. A weaker man challenging a stronger one because he has a Napoleon complex is a damn idiot.

depends

This pretty much. If not, just straight up drunk. lol

Yes

Depends on the situation of course. But picking fights with anybody isn't a very smart thing to do.

It’s only good if he’s trying to protect something or someone

if not, he’s a brainlet.

I think it's a smart tactical decision to make an overpowering enemies to underestimate you that they will refrain from using their fullest potential during the fight.

And to do that you must take the initiative, and had your enemies played according to what you might expect them to do.

You don't want your enemy to dictate the tempo of the combat.

There are many, supposed to be, one sided conflicts that ends in the underdogs favor because they baited the better ones into acting stupid, via provocation and issuing challenges.

So as long as you have a plan, challenging someone that is more capable than you is not necessarily dumb.

Depends on the situation

Depends on the situation...

Depends.

Always depends.

Brave. I mean, like, that's the personification of gangsta.

Depends if you win

It depends on whether he is brace or stupid

it depends on if he win or loses.

he's brave if he wins

he's stupid if he loses

It depends on a lot of factors (which I'd read all the categories before I voted :) ).

I won't even list them all, but it's mostly stupid to "challenge" anyone to a fight. If you intend to do violence to someone ESPECIALLY if it's to protect someone else you don't challenge them. If possible you don't even give them a chance to see you coming. Three key elements to an ambush Surprise, Speed, and Violence of Action. If you have any TWO of those you have a 99% chance of success. Frankly, if the combat isn't worth ambushing someone over (or better, cutting or shooting them) it's not important enough to fight over.

If you're absolutely STUCK being in hand to hand combat with a stronger opponent, CHEAT. Cheat, cheat, cheat, if you think you're cheating enough cheat more. Honor is for people who want to lose, tournaments or sparring matches. Again, if it's not worth cheating for...your life or well being...maybe, MAYBE property MAYBEdon't be stupid enough to get into a fight. Someone might start losing and pick up a bottle, rock, sharp instrument, call in their friends, the police might get called, any NUMBER of bad things that someone might not be able to walk away from. It better be worth every OUNCE of violence or none at all. Words was off.

Depends on a whole lotta things.

First of all - the situation. If it's a very nasty one and the big guy is being a bully or causes troubles to another being, then hell yes, he is brave, because he's gotta step up and he is doing it. No problem. But if he does challenge him for the fun, to prove himself brave or he is just being reckless - then no.

Secondly - if the small guy has fighting experience, if he's done research and prep time and yet he jumps at the big guy despite his physical advantage, that makes him not only brave but also smart. If he doesn't have any of these, relying entirely on the rules or the others to save his ass, and he defies him face to face, then he is stupid. If you see a bully or other form of injustice, sneak behind their back, gain unfair advantage, don't feel bad, they don't deserve better anyway. Just do it.

Thirdly - he needs a way out. If the small guy has provided some, then no problem. If he doesn't, well, he is stupid.

As you can see, depends entirely on the situation and the man. Also the environment if you've grown in. Some people are weak and stupid because they had easily lives. Some people are strong and weak because the same reason. Some people had easi lives and yet they are prepared. Some people had poor lives and they are still not prepared. It's all up to the character.

Depends on the context

Depends on the context.

Fighting is stupid in most scenarios. If the bigger guy (or any person for that matter) has done nothing wrong or only something minor then it's especially stupid. If you're protecting yourself or someone else and violence seems unavoidable, don't challenge, attack.

It's important to take certain steps to avoid the violence all together though if possible. Diffusing a situation is far better then escalating it if it hasn't already become violent.

Depends what the cause is for. If it's to satisfy your insecure mind set because you're weaker then it's stupid. If it's to protect a loved one then it's brave of course. If it's in a fighting competition then you have to circumvent their strength adv by avoiding grappling and keeping their distance.

It depends if the big man was making chicken noises at the little man.

Depends on the why.

Depends. Defending the honor of your significant other even when defeat is likely can be brave. Picking a fight to impress your significant other is foolish.

What everyone else above said. It really depends

It's pretty stupid.

Depends.

There is a reason Judo and Aikido are made.

@michaelbn: good point