In my now defunct (and hacked 😭) blog from yester-years (a wordpress blog, that had a rogue plugin that .. well whatever, it’s gone), I had written about the idea of infinity. I came up with a gut intuitive idea of having a ‘unit infinity’ (the ‘smallest’ infinity) and then having multiple other infinities that can be measured .. the ‘bigger infinities’. Anyway, only later when I began reading this book, did I realize, Cantor came up with a better way to think of it.