The book says START APU
Like with everything we do in life there are better and there are worse techniques.
We all know “that driver” that does everything we all do yet it’s unpleasant to drive with him/her.
Start, shift, accelerate, brake, corner, they do all that.
Yet their techniques are what makes it uncomfortable.
Flying single engine piston the POH says “advance throttle” it doesn’t state not to slam it open yet that’s a bad technique. A better technique is a 3 second count from idle to full power and the same back to idle.
Short crankshaft, swinging 60-70lbs weight aka prop and so on.
Your mom says to close the door behind you.
Implied is a non verbal warning not to slam it.
So the book says “START”.
Insight and technical understanding would warrant a particular technique....
So we just go braindead and turn the switch regardless of conditions or do we apply a light coating of mechanical empathy?