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

The "if overheating, add a restrictor in the coolant flow" tip has been around for decades and won't die, with many auto hobbyists literally spitting on their keyboard as they argue such with engineers. Strangely, the thermostat works the opposite way (opens more as coolant warms above its setpoint). Any engineer who hears this myth snickers (me, 72bluNblu, a few others here), especially an ME/ChE since they specialize in heat transfer and fluid flow. A Robertshaw engineer ran across this myth and traced the origin (1930's engines), which they now explain in a tech tip: Tech Tip #3: Thermostats & Restrictors - Stewart Components