A nice and relevant anecdote I recently discovered. When talking about the invention of the periodic table, everyone always focuses on the sudden dream that Dmi

A nice and relevant anecdote I recently discovered. When talking about the invention of the periodic table, everyone always focuses on the sudden dream that Dmitri Mendeleev had that revealed to him the table in it's full form, but they fail to acknowledge, as the story goes, the many hours of study and play with his set of "element cards" that preceded the revelation. [1] https://en.wikipedia.org/wiki/History_of_the_periodic_table#cite_ref-12 https://en.wikipedia.org/wiki/History_of_the_periodic_table#...