Alien life

But then again, if they are smart enough they might do something like birthcontrol (like in China) to keep the population on a level that's best.

 

8000 years ago better farming methods produced new classes of people who could be full time artisans ,scribes ,priests , leader elites and of course full time soldiers ...who all were able to live in perminant fortified cities , this is what we refer to as civilization ..warfare predates farming by thousands of years ...ie the yanimamo of the brazilian rain forrest
all animal populations expand in direct proportion to the supply of food wether salmon ,wilderbeast or wolves , when the population outstrips the food supply , there is a massive die off ,alway ...us hairless chimps are no exception ...
army mules are asexual ,they are smarter ,stronger and more sure footed than either donkeys or horses but boy are they pissed off at the world in general and army mule skinners especially....
aliens might now live in a utopian world free of strife but i would bet they didnt always live in such a way..before they had flying saucers they prolly had something like spads armed with something like vickers mg,s which could drop something like bombs ....i guess it possible they landed their spads and fought each other with knives but it seems kinda silly does it not?