▁met aph ors , ▁rev ived ▁more ▁slowly . ▁If ▁there ▁was ▁one ▁influ ential ▁individual ▁in ▁the ▁rev ival ▁it ▁was ▁probably ▁Donald ▁T . ▁Campbell . ▁In ▁ 1 9 6 0 ▁he ▁drew ▁on ▁Wright ▁to ▁draw ▁a ▁parallel ▁between ▁gen etic ▁evolution ▁and ▁the ▁" bl ind ▁variation ▁and ▁select ive ▁ret ention " ▁of ▁cre ative ▁ideas ; ▁work ▁that ▁was ▁developed ▁into ▁a ▁full ▁theory ▁of ▁" soci o - c ult ural ▁evolution " ▁in ▁ 1 9 6 5 ▁( a ▁work ▁that ▁includes ▁references ▁to ▁other ▁works ▁in ▁the ▁then ▁current ▁rev ival ▁of ▁interest ▁in ▁the ▁field . ▁Campbell ▁( 1 9 6 5 ▁ 2 6 ) ▁was ▁clear ▁that ▁he ▁understood ▁cultural ▁evolution ▁not ▁as ▁an ▁anal ogy ▁" from ▁organ ic ▁evolution ▁per ▁se , ▁but ▁rather ▁from ▁a ▁general ▁model ▁for ▁qu as ite le ological ▁processes ▁for ▁which ▁organ ic ▁evolution ▁is ▁but ▁one ▁instance ". ▁ ▁O thers ▁purs ued ▁more ▁specific ▁analog ies ▁not ably ▁the ▁anth rop ologist ▁F . ▁T . ▁( T ed ) ▁Clo ak ▁who ▁argued ▁in ▁ 1 9 7 5 ▁for ▁the ▁existence ▁of ▁lear nt ▁cultural ▁instructions ▁( c ult ural ▁cor pus cles ▁or ▁i - c ulture ) ▁resulting ▁in ▁material ▁arte fact s ▁( m - c ulture ) ▁such ▁as ▁whe els . ▁The ▁argument ▁thereby ▁introduced ▁as ▁to ▁whether ▁cultural ▁evolution ▁requires ▁ne uro log ical ▁instructions ▁continues ▁to ▁the ▁present ▁day ▁.