> As useless as any pure mathematics Are you hearing yourself talk? Do you know why you have (to just name one example out of many) thousands of pictures on yo

> As useless as any pure mathematics Are you hearing yourself talk? Do you know why you have (to just name one example out of many) thousands of pictures on your phone, and not just a few? Because of pure mathematics. Because of compression: Even JPEG2000 from back in the day uses intricate and beautiful compression algorithms based on wavelets.