clearing bits far away from computation

[Bear]

It wouldn't slow down computation at all. You can send one batch of bits off to be erased, and immediately start using zeros from another batch that have already been erased.

No matter how you slice it though, there's no advantage. Clearing the bits locally at site A, and conducting the heat away to site B using a superconductor, will under NO circumstances be less efficient than swapping bits from site A to site B using a superconductor, clearing them producing the heat at site B, and swapping back to site A using a superconductor.

So... even if it doesn't slow down computation at all, why would anybody do it?