Visible kicks are not enough when the drive frequency mismatches. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Off-frequency drive closes the growth claim
The natural frequency is 4 hertz, but the drive frequency is 3 hertz.
fnat=4Hz,fdrive=3Hz
Visible kicks do not imply coherent growth
Even with four visible kicks, the accepted growth is exactly 0 joules.