Depends on the definition of "generation" being used. One definition of generation is "about 30 years", i.e., the amount of time it takes to go from infancy to

Depends on the definition of "generation" being used. One definition of generation is "about 30 years", i.e., the amount of time it takes to go from infancy to raising a child. See definition 6 (as of time of writing): https://en.wiktionary.org/wiki/generation#Noun https://en.wiktionary.org/wiki/generation#Noun