[bluefirebrand]

Imagine if Math calculators were just subtly wrong some percentage of the time for use cases that people use dozens or hundreds of times a day. If you could punch in the same math formula 100 times and get more than 1 answer on a calculator, most people wouldn't trust those for serious work.

They probably wouldn't think that the calculator makes them faster either

[layer8]

If calculators did work that way, I'm afraid that people would nevertheless take them up because "it saves so much time", and would develop fancy heuristics to plausibility-test for errors.