[identity profile] tandw.livejournal.com 2013-11-25 05:19 pm (UTC)(link)
Biologists should look for very low complexity "life", in my opinion. Billions of atoms is too much.

OTOH, I would expect very low-complexity "life" to have been eaten by the more complex stuff as it comes into existence. Essentially, the conditions that were favorable to the development of protolife/less complex self-replicators have long since been changed beyond recognition by the presence of life here.