What kind of information one may store back then, which would result in reproductive advantage? If you are storing more detailed map, you need better path-finding to take advantage of more detailed map; if you store more details of your life, you need to do more statistics to find useful correlations; etc. Extra information needs extra processing.
Today, memorizing declarative ready-to-use facts—prepared by other people—can be very useful—yet they still require a lot of processing so that real world events would bring them to attention. Perhaps less when you have ready-to-use facts and methods to solve the problems prepared for you by another person, who identifies what knowledge you may use. That person however has to be able to match the real world problem to the solution he was taught.
What kind of information one may store back then, which would result in reproductive advantage? If you are storing more detailed map, you need better path-finding to take advantage of more detailed map; if you store more details of your life, you need to do more statistics to find useful correlations; etc. Extra information needs extra processing.
Today, memorizing declarative ready-to-use facts—prepared by other people—can be very useful—yet they still require a lot of processing so that real world events would bring them to attention. Perhaps less when you have ready-to-use facts and methods to solve the problems prepared for you by another person, who identifies what knowledge you may use. That person however has to be able to match the real world problem to the solution he was taught.