Doing "Research" has radically changed in the modern world..

[DetlefK]

4. The mental structure of scholars/researchers sure has changed over time:

In the Middle-Ages, when there was little hard science known, what made an intelligent person was knowing a lot. In the olden days, before mass-production of books, that meant mental techniques like the memory-palace. If you are properly trained in that technique and are accustomed to it, you can memorize huge amounts of raw data. Lists upon lists upon lists.

That changed when books became widely available. The memory-palace, while once a mandatory tool for any scholar, was slowly falling out of use. Instead of memorizing facts, it became important to know in which books you could find the facts.

And the internet changed that once again: Instead of KNOWING facts per se, it has become far more important to know how to find them and how to digest them.
Books are being replaced by the internet.
And the memory-palace is a curiosity with very few active practicioners.