Topic is quasi in nature: Am I stupid, or did I found a bug.

Link to tutorial: https://vimeo.com/81427434 [vimeo.com]

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about 38:20, in curve follow.

right now there is: amp *= @oncurve*3

I THINK that it should be more like:
amp += @oncurve*3;
amp *= fit(@oncurve, 0, 1, 1, 0);

If I understand correctly “ *= ” means multiply amp with whatever is after =. If amp is 0 then we are: 0*(@!oncurve*3)=0.
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there is another bug in explanation about : pop_replicate_setup.hip ( 55:42 )

pop wind node -> VEX: amp *= fit(@P.y, 5, 5.5, 0, 1);

This code is doing nothing. Result is the same, as it would Amp brought down to 0. P.y is not reaching 5.

bypass popforce1, popforce2, popdrag1, set airresist in popwind1 to 0.1.

add popcolor after popwind with VEX: color = set(fit(@P.y, 5, 5.5, 0, 1), 1 , 0);

this will color yellow particles that reach condition in “fit(@P.y, 5, 5.5, 0, 1)”
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If anyone could confirm or deny my point of view, I would be greatful.