All this is true, but none applies to the project under discussion.
As an aside, I expect any kind of "backup humanity" goal would almost certainly be easier, more sustainable, and more likely to succeed on land than under water.
On the other hand if we messed up badly enough to require a backup, I'm not sure we deserve it.
As an aside, I expect any kind of "backup humanity" goal would almost certainly be easier, more sustainable, and more likely to succeed on land than under water.
On the other hand if we messed up badly enough to require a backup, I'm not sure we deserve it.