think about your take off roll
to gain speed what do you do? open the throttle sound familiar?
to leave the ground, you.....wait for it.....pull back on stick...
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Mt Angry
for one second I thought you were going to go into the old pitch or power for speed joke there about the student being taught pitch for speed sitting on the end of the runway pumping his elevator up and down to accelerate
Obviously sitting on the runway there is no potential energy available from the airframe unless there is a cliff at the end of the runway so you only have one source available to you to accelerate to takeoff speed.
That is why its so important especially for students to think of two power sources, two throttles and energy management rather than the pitch or power for speed both in isolation are flawed.
Pace