Does This Debunk the "Coolant Can Flow Through the Radiator Too Fast" Idea???

Bewy said
When the WP is not turning there is no flow....& no pressure.

Dunno about this one. The point made earlier about pressure being created by heat in the engine by heating the coolant made sense (to me).

If there was no flow (let’s just say no pump inline) pressure would still be created by the heating of the liquid, kind of like a steam engine? No?