I 100% agree with you. Absolutely no argument from me. That is why I stated clearly that for people with no air compressor there is another option. If they have no air then I think you will agree the impact screwdriver would be more effective than just waiting for a strong gust of wind while holding your Tommy knocker.hand impact drivers suck compared to the screw knocker...I have used both, the screw knocker will just rattle and with a little pressure, the screws will just start to spin out, no hammer involved...