This is why I love physics! The electron is a wave function, until you 'break' the wave function by observing it. Crazy.

Diffraction is an example of the Uncertainty Principle. The more accurately you know the position of the electron as it passes through the slit (by making the slit the same size as an electron), the less accurately you know where it will end up on the screen (a bigger diffraction).

Also, if you use an electron detector that is only 50% reliable, you will observe a pattern that is halfway between an interference pattern and the 2 peaks you would expect from a particle.

I'm reading 'Universe in a nutshell' right now, it's really good although I feel as though I've read half of it already. It was part of my summer reading list which, well, hasn't exactly gone to plan. Actually, Tombi, I think you suggested universe in a nutshell for me at the beginning of the summer. Well I only just got round to reading it this week lol.

There pretty much has to be 2 time dimensions i'd think.  Afterall... what we call time didn't always exist. (theoretically.)

What I love is that it seems at least in one of the models of the universe is that the four dimensions we know collapse down into two at small enough scales. Thats just bizarre.

That's not the way it's thought to be, as such.  It's better to think of a ballon expanding with the universe being the inside of the ballon, the hard part is then getting your head around the idea that the ballon itself is the extent of everything, with nothing outside of it.

You see, theoretically, the Universe could be finite (i.e. it has a limited size) but unbounded (i.e. it's size, while finite, could grow and potentially without limit) or it could be finite but bounded (i.e. there is a limit to expansion, etc).

I believe the notion the Universe could be infinite (i.e. without end) is not currently felt to be very probable.

So in a sense the Universe is expanding not into empty space already there waiting for it to expanding into, but by expanding the space within it, like a ballon continuing to expand, or a box being unfolded.

I understand (I believe) many of the core concepts, but I think only a few really special folks can really think fully in those concepts without their heads hurting (note I'm not one of them, and my head is already hurting, but pleasantly).