Boozy tree shrews immune from fermented fruit hangovers

"That's about the same as beer"
Actually that's about the same as American beer.

wait? they are our fore fathers of the drunks today,

"...evolutionary forces that drive humans to drink." LOL

both of those questions has already been answered through science, though. you don't know why alcohol is addictive?

Medicine has thoroughly investigated the chemical reasons behind addiction, it's true. But no one is quite sure of why those chemical reasons themselves exist. Evolutionary biology asks the 'why behind the why' kind of questions.

There's plenty fun about it, Mr. Teetotaler. It only gets bad when you're too weak in the mind to say, "I'll stop now."

Actually, it only gets bad when you're too DRUNK to say "I'll stop now"... There's enough strong-minded alcoholics out there for it to be a matter of willpower.

Yes, lots and lots.

Bullfucking shit asshole. How does a butterfly wing evolve is there is no use for the wing that isnt all.

Ah, I see we have an idiot in our midst. The wing evolves from something - anything really - that the ancestral 'butterfly' possesses. A 'wing that's no good for flying' may be good for something else, like something I can't even imagine. And it doesn't have to be perfect to be useful, it just has to work (nothing is perfect anyway). A shit wing is better than no wing at all, sometimes. Over generations the 'design' gets better.