For me, its always the point when an article like this declares someone smart because they could memorize this or that at age X. Young children (~3 years old if

For me, its always the point when an article like this declares someone smart because they could memorize this or that at age X. Young children (~3 years old if I remember correclty) are the best in short term memory, slightly older is on average unbeatable in fact learning and so on. Nothing special about that, you are not the new Einstein just because you know 200 connected facts at age 7.