Probably off-topic but I checked Isaac Asimov's "Realm of Numbers" from my library on the recommendation of HN and it's great. One of the earlier chapters outli

Probably off-topic but I checked Isaac Asimov's "Realm of Numbers" from my library on the recommendation of HN and it's great. One of the earlier chapters outlines how the abacus and its concept of 'the unmoved row' could have helped forment the idea of zero. Very interesting text, no idea if the ideas are considered incorrect these days but still entertained and educated. 10/10 read.