And I mean really slow.
I don't know how this would even be done, but just a thought experiment.
To explain why I ask this, the way I understand the phrase "we can't know the momentum and position of something at the same time" is that when things move really fast, its not only that we can't know where it is, its that it actually stops being in one place at a time, and spreads out over a space where it has different probabilities of being in different parts (if I'm wrong, I'd super appreciated a correction, just if there's math involved please go through it slowly, step by step).
So if we were to slow the electron down, would it then only be at a single place? If we were to somehow stop an electron from moving altogether, would that mean it would literally only be at a single place? Or would it somehow teleport between locations?
Finally, if we could accelerate a person to a really, really high speed, would they also stop being at a defined location while they are moving, and spread out with probabilities of being in different places at the same time?