Thank you for writing this, it flowed well and clearly took time and thought to write.

I think I still haven't fully understood the significance of aperiodicity, even if I learnt some of its properties.

And thank you for elaborating on Mendeleev.

I wrote that post on Mendeleev because I'd actually come across his example in a book about library science.

I was interested in this story (a rumor) that he used physical cards to sort and reorganize the elements in front of him till he found a periodic organization.