In fact, it isn’t as if any computer whatsoever can give you precise results for any real-world problem, for some meaning of precise.
I remember being told by a slightly excitable engineer that 12-bit A/Ds were now available with a 12us acquisition time which meant we could now digitise a 50kHz signal we were working with. He was not pleased to be told that 12 bit, 12us equates to a practical maximum full-resolution digitised signal around 12Hz.
