Sean Carroll's avatar

Sean Carroll

@seanmcarroll.bsky.social

Thought experiment: take all of the protons & neutrons in the observable universe, put them in the form of DNA nucleotides, collected into strands of length N. Then imagine the universe searches through all possible combinations. How many can be searched in the age of the universe?

1 replies 0 reposts 12 likes


Sean Carroll's avatar Sean Carroll @seanmcarroll.bsky.social
[ View ]

Since it's a thought experiment, imagine that each strand runs through possible combinations at a billion per second, searching for the fittest one. (Not realistic!) In that case, the whole universe can search all of the genomes of length N as large as ... 181.

2 replies 0 reposts 13 likes