Some specialized people could probably do 20x20, but I'd still expect them to make a mistake at 100x100. The level we needed for space crafts was much less than that, and we had many levels of checks to help catch errors afterwards.
I'd wager that 95% of humans wouldn't be able to do 10x10 multiplication without errors, even if we paid them $100 to get it right.
There's a reason we had to invent lots of machines to help us.
It would be an interesting social studies paper to try and recreate some "LLMs can't think" papers with humans.
> There's a reason we had to invent lots of machines to help us.
The reason was efficiency, not that we couldn't do it. If a machine can do it then we don't need expensive humans to do it, so human time can be used more effectively.
With enough time and effort you can build an entire science of how arbitrarily complex computations can be done with pen and paper without errors in an arbitrarily long amount of time.
But then you're not measuring the ability to perform the calculations, but the ability to invent the methods that make the calculation possible.
I'd wager that 95% of humans wouldn't be able to do 10x10 multiplication without errors, even if we paid them $100 to get it right. There's a reason we had to invent lots of machines to help us.
It would be an interesting social studies paper to try and recreate some "LLMs can't think" papers with humans.