Out of which some 3 billion years had to pass before unicellular forms of life evolved into multicellulars.

Who knows if this jump alone should be taken for granted - plus, not many planets could provide 3 billion years of "good weather" (or staying habitable) to start with.

> Out of which some 3 billion years had to pass before unicellular forms of life evolved into multicellulars.

We might be a slow developer and poor representative sample in that respect, but without more data it's hard to tell.

> plus, not many planets could provide 3 billion years of "good weather" (or staying habitable) to start with.

I suspect the opposite will be true, red dwarfs are the most common type of star and are stable for trillions of years. Even if the average time it took multi cellular life was 30 or 300 billions years then it might not matter for life evolving there. They do come with some other caveats though: https://en.wikipedia.org/wiki/Red_dwarf#Habitability

That is the odd thing about the history of life on Earth isn't it? Prokaryote popped up almost as soon as was conceivably possible. And then. Nothing. For billions of years. The plausible explanation is that you need Oxygen for Eukaryotes and that's how long it to change the chemistry of a planet. It just seems weird to me.

"Let me make my position clear. The miracle, and I do not mean it in the religion sense, I mean it in the evolutionary sense, the miracle of the evolution, is the cell. While there are theories involving an RNA world and selforganising, it remains a mystery. Once you had the eukaryotic cell from the point of view of evolution and development it was downhill all the way, very very easy. "

Lewis Wolpert : https://link.springer.com/chapter/10.1007/978-3-0348-8026-8_...

Just a reminder - we were naked for most of our history and were able to survive.

But not in nearly as many emvironments as we can today. We can assume, over time, life learns to live under absurd conditions; but its hardly safe to think it can start in those same conditions.

I think humans are a bad example - we use our own relatively highly developed intelligence to solve problems, and that means we had to feel safe enough from the environment long enough to develop that. But if we look at older organisms, like the tardigrade, there are some incredibly robust creatures out there.