The Perfect Cosmological Principle, or The Cosmology of the Ecclesiastes

While analyzing the consequences of modelling the Cosmos as a collection of a huge number of Parallel Universes, I wrote some 18 months ago:

[…] We have learned that our planet is not the Center of the Universe. Apart from being able to harbor life, Earth is a run-of-the-mill planet in an average star in a not-so-special galaxy, belonging to an ordinary Local Group gravitationally linked to a Supergroup like many others, in a corner of the Universe that is not extraordinary at all

Let’s call that the “Banality Principle”, with us since at least since the times of Copernicus […]

As it happens, it is called the Copernican Principle indeed.

It is already quite important as it is, since it means we can investigate physics in our own vicinity and assume that the laws we observe are the same throughout the Universe.

There is another step usually missed though: if we just expand the Copernican Principle to include time, then the hypothesis is that then the same things will keep happening.

This is the so-called Perfect Cosmological Principle, rejected in the past because undermined by the overwhelming evidence for the Big Bang, a”Beginning” and therefore a “special Time” in the Universe.

However, this argument fails in in a Multiverse Cosmos, where the Big Bang is just one of many. If that is the case then, the Ecclesiastes may very well be right:

1,9: The thing that hath been, it is that which shall be; and that which is done is that which shall be done: and there is no new thing under the sun