Chanced upon this Brahmi numeral comparison on Wikipedia.
3 was the most striking for me and I was left wondering why for so long I wasn’t aware of the 3 segments that form 3. Numbers greater than 3 are more symbolic than representational. Such symbolic compression is definitely a part of the stuff (however small) that got us into civilizational mode. It will definitely be interesting to theorize how these symbols came to represent those numbers. One also wonders why more people were inclined to study numerology as opposed to numbers. 😉