Comment Re:Life is extremely improbable (Score 1) 42
"Not unless there's only one way to make a ribosome
But there may have been an optimal ribosome for the conditions at the time, and even in disparate populations that one optimal (or a close enough version of it, the word "nearly" is doing a lot of work in your post) could have displaced all other versions, until the initially separate populations merged and created the consistency in origin we see today.