In some detail, but he concludes:
If we were to rewind the clock to the initial formation of our Solar System and run the clock forward again a billion times, it’s extraordinarily unlikely that human beings would arise even once. But if we were to rewind the clock back to the early stages of the hot Big Bang, a Universe filled with stars, galaxies, rocky planets, Sun-like stars, and trillions upon trillions of chances at life would be all but inevitable.
The reason is simple: the laws and raw ingredients of the Universe are always the same. A Universe born with normal matter will produce the light elements; a Universe with density imperfections will produce a first generation of stars; a Universe with dark matter will hang onto that ejected material and form stars with heavy elements; a Universe with a second generation of stars will form rocky planets and Sun-like stars; and a Universe with rocky, Earth-like planets will enable life to exist, survive, and thrive for billions of years. The rest might all be up to chance, but that’s what made our existence possible. It’s up to all of us not to squander it.Ethan Siegel, “How Did The Universe Make Our Existence Possible?” at Forbes
The proponents of chance origins tend to make it look less likely all the time.