I love physical buttons and switches, I don’t like an e-reader without page buttons.

I think I have seen this more commonly in technical documents than everyday English, maybe there is a reason for that or maybe it just sounds better in that context.

Isn’t water cooling also using conduction via a different medium? The hot components contact cool water which is heated and pumped away to be cooled by contact with a heat sink somewhere else or flushed and replaced with new water.