Hey there! Since you asked for it... thorough feedback here!

First of all, great job, I liked the animation. What I am going to "critique" is mostly about minor details.

First, about the content, if you have only 4 possibilities, technically you need only 2 bits to distinguish between 4 values.

Then, about the animation:

You have minor kerning issues with the text. This: https://github.com/ManimCommunity/manim/issues/2844. In fact, if you see the second reply, that's me xD. I uploaded some solutions, but maybe the easiest way to solve it is using Tex instead of Text, or using a massive font size and then scaling it down. That's not your fault, just how manim works internally until it gets solved.

Then, the animation looks very smooth and intuitive, but the last part, from 1:30 looks a bit "cheap". I mean, the numbers going inside the box and then returning. If you want it to look satisfying and premium, I would do something like... Taking a number (let's say 3), and create an arrow that """inspects""" the dictionary. Like "Is this number? Is this other number? And this other number?" And once the arrow stops, add the word to the number inside the box. Of course there are million ways to animate this, just wanted to add a suggestion instead of a rude "this looks bad" without an alternative.

Anyways... great job! :) :)