<Moderator's note: this is a spin-off from another thread> Matter isn't spreading out because of gravitational attractions between matter. If you took a bunch of gravitating particles and sealed them in container, the highest state of entropy is one where all the particles coalesce, which would be counter to the highest state being spread out. If that's what you mean, but I'm not sure I fully understand your argument. You still have the opportunity, assuming you don't get banned for spamming this thread in the other forum. You do need solid references when discussing something "basic" when counter to what's currently accepted.