This is interesting to me because (if I understand correctly) Twitter uses 'universal ids' like tweets, user profiles, messages etc all use the same type of ID

This is interesting to me because (if I understand correctly) Twitter uses 'universal ids' like tweets, user profiles, messages etc all use the same type of ID so they need big numbers Also I wonder what underlying factors would make a data type max out at 18,446,740,000,000,000,000