Many students have an interest and want to pursue it. It's only through self-motivation that people really learn.

There was a study of where hockey players come from, they tend to come from cities of approx. 50,000 people. Large enough for schools to offer many different types of programs in schools, but small enough that a teacher knows each student and their family, and can help a motivated student train. In many large urban centers teachers don't live in the same communities that their students are from, and can't offer that extra oversight. This is why in large urban centers, it would be better to start to specialize early.

All roads lead to the same destination. Eventually you'll need to know a bit of history, math, etc. no matter where you start from. So beginning in a specialization doesn't exclude other knowledge.

Sometimes it's better to have an in-depth knowledge of one subject, if a student starts early and focuses on one thing, they'll be ahead of their peers.

Very rough midpoint years; Baby Boomers 1949, Gen X 1979, Millennial 2009.

What size of storage would you need?

I think that many of our conceptions of Europe, and history are off. There mas much more churn and people moving around than we think. Though Menocchio probably didn't travel far, the priests and members of the Inquisition did. If you where close to a river, you'd see lots of people moving around, they were highways of goods being moved.

Perhaps in the future we'll spend more time recognizing the mastery of craft that industrial designers put into creating household lamps and such. Especially since the history is pilling up and ready to be mined for interesting content.

You can also see the small changes in the medium; everybody at once adopting click-bait titles once one person was successful with it. As soon as a channel gets some success like 'Hand Tool Restoration' then everyone starts doing the same thing.

Also, the levels of abstractions, built upon abstractions, and wrapped in other abstractions is also getting silly; Gatsby Curve, Gini, citations and publication database...