No, no, no!

Rick the Autoguy recently posted that he's been learning to "drive stick" which means he's been learning to drive a manual transmission after driving autos for years.

An Anonymous commenter gave this (bad, bad) advice:

in a panic stop never disengage the clutch, this would cause you to loose compresion braking. And could possible send the car into a skid. (Happened to me the first week I drove a stick) Just leave it in gear and hit the brakes

No, no, no! In a panic stop, always disengage the clutch. If you don't the engine will be still trying to push the car forward while you are using the brakes to try to slow the car. Compression braking is fine for big trucks (tractor-trailers if you're from the US) and if your brakes fail or fade but is next to useless for panic stops.

As to sending the car into a skid, learning threshold braking, or cadence braking as an almost-as good alternative will prevent any unwanted skids, slides or other loss of traction. Of course, ABS positively owns for a regular car because you just mash the pedal to the floor and the system automagically takes care of the performance of the cadence/threshold technique. The point to ABS/threshold braking is to maintain steering control by avoiding wheels locking.

Awareness of other road users will prevent 99.99% of emergency braking in any case.