Should you run a car without a thermostat?

Let's see, are you referring to Arrowheads text on T-stats that state:

THERMOSTAT
Severe overheating can often damage a good thermostat. Therefore, if the engine has overheated because of another problem, the thermostat should be tested or replaced before the engine is returned to service.One way to check the thermostat is to start the engine and feel the upper radiator hose. The hose should not feel uncomfortably hot until the engine has warmed-up and the thermostat opens. If the hose does not get hot, it means the thermostat is not opening.

Another way to test the thermostat is to remove it and dip it into a pan of boiling water (it should open). The exact opening temperature can be checked by using a thermometer.

If the thermostat needs to be replaced, install one with the same temperature rating as the original. Most cars and light trucks since 1971 require thermostats with 192 or 195-degree ratings. Using a cooler thermostat (160 or 180 degree) can increase fuel and oil consumption, ring wear and emissions. On newer vehicles with computerized engine controls, the wrong thermostat can cause major performance and emission problems if the engine fails to reach the proper operating temperature. Cooling system leaks Loss of coolant because of a leak is probably the most common cause of overheating. Possible leak points include hoses, the radiator, heater core, water pump, thermostat housing, head gasket, freeze plugs, automatic transmission oil cooler, cylinder head(s) and block.

Or maybe you were referencing Stewart Warners "tips" on thermostats which state :

Tech Tip #3 - Thermostats & Restrictors
Thermostats & Restrictors
We strongly recommend NEVER using a restrictor: they decrease coolant flow and ultimately inhibit cooling.

For applications requiring a thermostat to keep the engine at operating temperature, we recommend using a Stewart/Robertshaw high flow thermostat. This thermostat does not restrict flow when open. The Stewart/ Robertshaw thermostat enhances the performance of the cooling system, using any style of water pump.

Also, that's some...impressive numbers you've posted there, considering that no one is talking, even remotely, about water velocity/speed... If you'll "look closely" at my post, you'll see I don't change anything about the cooling system, other than path and the t-stat's cycle time.

I'm not going to argue with anyone about this stuff, as I've experimented with many engines to come to my conclusions - conclusions that are consistent with industry-wide standards. I personally could care less if you run a t-stat in your engine or not.

Southernman