In the real world this is called the Thermal Grill Illusion, which was discovered back in 1896. Much to our chagrin, [Adam Davis] has just finished building a working prototype. Sound familiar?

In the real world this is called the Thermal Grill Illusion, which was discovered back in 1896. Much to our chagrin, [Adam Davis] has just finished building a working prototype. Sound familiar?

But sometimes they would be exposed to both warm and cold stimuli simultaneously, which triggered a sensation of burning pain ...

But sometimes they would be exposed to both warm and cold stimuli simultaneously, which triggered a sensation of burning pain – a puzzling phenomenon known as the thermal grill illusion ...