Sabine Hossenfelder - Existential Physics - Notes

A readable physicist. How about that!

The multiverse suggested by the math with some explanatory power is not science because if additional universes cannot be observed it is not science. Her term for the multiverse is a-scientific. Inflation cosmology is not proven.

We are not living in a matrix computer simulation. That is science fiction.

According to the current established laws of nature, the future is determined by the past, except for occasional quantum events which we cannot influence. Whether you take that to mean free will does not exist depends on your definition of free will.

The presence of conscious beings is not just random but I do not know if the universe has a purpose. Roger Penrose

From a scientific position our insignificance in this universe is shocking with as many as 100 billion planets in each of 200 billion galaxies in the observable universe sith 85% of the matter in the whole thing being dark matter.

The fine-tuning argument doesn't work.

It is not a scientific argument to claim that the constants of nature require an explanation.