The real curve has the fraction inverted:
y ≤ x / (x+t)
This equation only fits the first part of the curve, i.e. x ≤ 1-t. Here t is a time parameter, ranging from 0 at the start to 1 when everything is fully sorted.
The other videos created by the same author are equally impressive, beginning with straightforward explanations and gradually advancing to complex topics such as gamma and digamma functions [0]. These videos fully grasp the capabilities of Grant Sanderson's Manim library to enhance their visual appeal and educational value [1].
[0]: https://www.youtube.com/watch?v=v_HeaeUUOnc
[1]: https://github.com/ManimCommunity/manim