> Calculators were arguably the predecessor to computers, which are kind of a big deal :)

"A computer is a machine that moves data around and only occasionally performs computation on it." ;-)

Computers aren't great, because they can compute numbers faster, they're great because we've managed to encode text, audio, video, geospatial, etc. information as numbers, which allowed us to perform complex text, audio, video, geospatial, etc. operations.