[Animats]

So it's a histogram of 100 bars, forced into a spline in SVG to make it look like it has more detail than it does.

[prvt]

That's the big picture idea.

[Animats]

I knew that polynomial curve fitting results in overshoots like that, but didn't think that splines had that problem.

[prvt]

Splines are polynomials after all. Also, not every spline has this problem. The one YouTube is using is Cardinal spline.