Classification by characteristics
is something we do. Some of us specialise in it - those with a natural talent of putting things in order, neatly, in patterns. Some might say to an obsessive degree.
We are not the only species to possess such a trait; eg: one subset of species spends all day arranging silky traps in intricate patterns for the purpose of gathering food, a system developed over millions of bla bla bla
(, Sat 8 Apr 2017, 13:05, Share, Reply)