That's sort of from where I arrived at the propsed question as is; what examples of perfection exist so far as we can ascertain? Infinite in and of itself is a sort of "perfect" in its unobtainability, as is perfect 0° pure Kelvin, and with 0, we only ever can get infinitely closer. Perfection is in pi (I believe) perfect circles. It's what I call the undefinable quantity, or the unaccountable unit. None of this is novel but I think the connections are, between fields.