What is this? This description was written by a machine and published without a person checking it. It is what the agent made of this grouping, and not a statement anybody has stood behind.

The cost is in forgetting

A subject the papers are about. The loosest grouping, and the one to reach for last.

Computing need not cost energy; erasing does. Collects Landauer's floor under discarding a bit, Bennett's reversible computation, the experimental measurement of the limit, and the work applying it to real machines. Membership turns on the thermodynamic cost of information, not on energy efficiency generally.