RTKDCMB
Senior Master
Which is kicking and punching air, and not teaching you how to hit.
It is teaching you how to strike with correct technique, hitting the pads teaches you how to hit with impact. Sparring with full contact can lead to lack of balance, poor distancing and a lack of control.
so you're saying that if I stand a foot away from a punching bag there's no way to control the amount of force I can generate in a strike?
No that is not what I am saying and if you were a foot away from the punching bag then you only have more limited options (i.e you could not do things like side kicks etc). What I am saying is basically force equals mass times acceleration no matter what the destination of the strike or what is in its way. I strike with maximum power no matter if I am doing basics, patterns, drills, pad work or breaking. The force I use for sparring depends on who I am sparring, e.g If I am sparring an adult male black belt of similar experience/ability I am striking with full speed and power, if I am sparring a 12 year old girl, not so much.