OK, at first I was going to post this in GQ, or even IMHO, or GD…in fact I thought of all the forums except cafe society. Mods - if you think it should be somewhere else, feel free to move it, I won’t take it personally 
In the end I decided on MPSIMS, since it is sort of an “out there” question - too “out there” for GQ. I’m not even sure I know how to phrase it properly, but I’ll try.
The Uncertainty Principle implies that at any moment, ephemeral virtual particles are popping in and out of existance throughout the whole of space (include the part of it we live in).
I believe Quantum Theory also says that it’s possible for the correct atoms of, say, a fully working, fully assembled toaster to materialize on the table next to me.
I think I understand that it would have to be for a correspondingly short time that the thing exists, given the amount of “uncertainty” required for such a macroscopic event.
Now, as I understand it, such an event has a small (understatement) but non-zero probability of occurring.
This is where my question comes in (and I’m not sure if this is even a philosophical or physical question). Think of all the possible events that could be happening. A toaster could materialize, or a basketball, or a vase of flowers (echos of “Hitchiker’s Guide…”), or a bowl of fruit…
Each of these things has an infinitesimal probability of occuring, on its own. But if you add up all those probabilities, surely some such event should be occurring all the time, everywhere, when you think of how many possibilities there are??
Why aren’t there basketballs and toaster materializing all the time? However improbable an individual event is, there must (?) be an infinite number of possible little events, so why don’t they happen all the time? Or is it that the probability of each event is so small, that even when you add up the billions and billions and gazillions of them, you still get an ‘improbable’ total?
OK, I’ll stop now. I promise I came up with this question in a totally sober state of mind (makes it even scarier I guess).