Visualizing E=MC2

[Klaynos]

I kick a foot ball at two goals side by side with a several meter gap between them, I score in both goals with the single ball at exactly the same time...

 

"If you think you understand quantum mechanics, you're wrong" <-- the general jist of a well known quote from a well know quantum theorist who's name I have forgotten... :|

[guardian]

1 particle going through 2 places at once

...that's the problem right there, most will stop at imagining a particle - that's not all that is going on IMHO. If you imagine anything moving you automatically assume space but the way we imagine space may not be entirely representative of reality