Darren New <dne### [at] sanrrcom> writes:

> Note, again, this is all my layman understanding.
>
> Warp wrote:
>>   Does that mean that the reason why objects can't pass through each other
>> is fundamentally electromagnetic?
>
> Yes. There's only four forces: gravity, electomagnetic (aka

Freeman Dyson say no:

"A seminal work by Dyson came in 1966 when, together with Andrew Lenard
and independently of Elliott H. Lieb and Walter Thirring, he proved
rigorously that the exclusion principle plays the main role in the
stability of bulk matter.[13] Hence, it is not the electromagnetic
repulsion between electrons and nuclei that is responsible for two wood
blocks that are left on top of each other not coalescing into a single
piece, but rather it is the exclusion principle applied to electrons and
protons that generates the classical macroscopic normal force. In
condensed matter physics"

http://en.wikipedia.org/wiki/Freeman_dyson

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