similarity

Similarity depends on the level of details you're looking at. Two human beings - they have the same number of limbs and outer shape. But maybe different hair colour, or maybe their DNA differs. The further down you go, the more difficult it is to find similarities and identical matches.

However, there comes a (bifurcation?) point, at which suddenly, what seems diametrically different, is eternally the same, for ever, and always, everywhere. Where all matter is energy, all subatomic particles are the same energy manifested in different forms, and where all is that same one thing.

Would there be a universe if there was no one to observe it?