[alwayslikethis]

https://www.schneier.com/blog/archives/2009/09/the_doghouse_...

It's more than that. Simply incrementing your way through a 256 bit counter is impossible by the thermodynamic cost alone.

[swijck]

Correct. Better to get into other forms of cryptography than pointlessly increase the numbers. We need to think more about PQ proofing.

[tatersolid]

AES-256 is already post-quantum secure; what exactly are you suggesting?