Hmm, that's not really fair. Programmer time is a major consideration. We live in a time where a complicated, interesting visualization like this can be built

Hmm, that's not really fair. Programmer time is a major consideration. We live in a time where a complicated, interesting visualization like this can be built in a day or two, and appear as #3 on hacker news. Less than 10 years ago it probably would have taken 10x the time, maybe more, and your iPad Air didn't exist.