"Behavior psychology?"

[DC_DEEP]

And not to be confused with a Differential Amplifier, which is a device which amplifies the difference between signals on its two inputs.

And not to be confused with a differential rear end (which allows the two rear wheels of an automobile to rotate at different speeds, even though the torque applied is the same...)

 

[lafever]

What about orgone boxes?

Not to be confused with organic boxes.