I hope all you clickers out there are keenly aware that clicking that brake on-off 200 times a day will not prevent most chainsaw injuries. Number one injury cause is kickback - not something clicking will prevent, and may actually cause you to be injured if you wore your chainbrake out clicking it 10,000 times. Number 2 is blind cutting (think your feet or lower extremities) - again not prevented by clicking. Then there is fatigue... clicking may help you there if you are tired and walking through uneven terrain and have both hands on the saw - otherwise, nope, clicking won't help if you are a tired cutter who momentarily loses control of the saw. Not to mention, if you fall with two hands on the saw after clicking and the chainbrake handle hits something and deactivates on your way down, you still may be injured. So don 't walk around with 2 hands on the saw.