, ▁including ▁dual ▁inheritance ▁theory , ▁soci oc ult ural ▁evolution , ▁mem et ics , ▁cultural ▁evolution ism ▁and ▁other ▁variants ▁on ▁cultural ▁selection ▁theory . ▁The ▁approaches ▁differ ▁not ▁just ▁in ▁the ▁history ▁of ▁their ▁development ▁and ▁discipline ▁of ▁origin ▁but ▁in ▁how ▁they ▁concept ual ize ▁the ▁process ▁of ▁cultural ▁evolution ▁and ▁the ▁assumptions , ▁theories ▁and ▁methods ▁that ▁they ▁apply ▁to ▁its ▁study . ▁In ▁recent ▁years , ▁there ▁has ▁been ▁a ▁convergence ▁of ▁the ▁cluster ▁of ▁related ▁theories ▁towards ▁seeing ▁cultural ▁evolution ▁as ▁a ▁un ified ▁discipline ▁in ▁its ▁own ▁right . ▁ ▁History ▁ ▁Arist ot le ▁thought ▁that ▁development ▁of ▁cultural ▁form ▁( such ▁as ▁poetry ) ▁stops ▁when ▁it ▁reaches ▁its ▁m atur ity . ▁In ▁ 1 8 7 3 ▁in ▁Har per ' s ▁New ▁Month ly ▁Magazine , ▁it ▁was ▁written : ▁" By ▁the ▁principle ▁which ▁Dar win ▁describes ▁as ▁natural ▁selection ▁short ▁words ▁are ▁gain ing ▁the ▁advantage ▁over ▁long ▁words , ▁direct ▁forms ▁of ▁expression ▁are ▁gain ing ▁the ▁advantage ▁over ▁indirect , ▁words ▁of ▁precise ▁meaning ▁the ▁advantage ▁of ▁the ▁ambigu ous , ▁and ▁local ▁id i oms ▁are ▁everywhere ▁in ▁dis adv antage ". ▁ ▁Cultural ▁evolution , ▁in ▁the ▁Dar win ian ▁sense ▁of ▁variation ▁and ▁select ive ▁inheritance , ▁could ▁be ▁said ▁to ▁trace ▁back ▁to ▁Dar win ▁himself . ▁He ▁argued ▁for ▁both ▁custom s ▁( 1 8 7 4 ▁p .   2 3 9 ) ▁and ▁" in her ited ▁hab its