One of the deceptive factors about the theory of evolution is that people in this day and age think that no matter what they do, how many of their brain cells they drown in alcohol or drugs, thanks to the process of evolution, they're automatically bound to get smarter all the time.
When nothing - I mean, absolutely n.o.t.h.i.n.g. - could be further from the truth.
As a result we have a bunch of wise guys sitting along with us on the bus of life that aren't always exactly easy to love.
While this movie won't exactly knock your socks off, it does give a few clues, or even if nothing but some glimpse of hope, that it's not entirely impossible.
So, if you have a hard time coping with the devastating gap between what the world (and folks in it) ought to be like (according to your personal standards and ideas) and the way it actually is, this story might cheer you up a little.