Shunting-Yard Animation

A charming little animation about how computers rearrange math problems should have been a quiet nerd delight. Instead, the real show happened in the comments, where viewers immediately turned into detectives, hecklers, and bug reporters. The animation shows a train-like system sorting parts of a formula into a new order so a machine can solve it step by step. Cute! Simple! Except the crowd was not content to just clap and move on.

The loudest reaction? "Wait, where did the parentheses go?" One commenter hilariously accused the animation of basically making the brackets disappear off-screen like a magician hiding evidence, then escalated into a philosophical detour about whether computation is allowed to "throw away garbage" at all, even dropping a Wikipedia link for backup. That is exactly the kind of comment-section energy this deserved.

Then came the practical outrage. Another user typed in 100+88/4 and got back a mashed-together result that looked more like a password than math, sparking complaints that the tool should separate numbers more clearly. One helpful explainer stepped in to translate the whole thing for confused readers: it turns normal human-friendly formulas into a machine-friendly order called reverse Polish notation, basically a way for a simple calculator brain to work through the problem in one pass. Meanwhile, mobile users were left pounding the glass, with one person flatly asking why it would not even start on Safari. Add in a commenter casually plugging their own old demo, and you have the full internet package: wonder, confusion, nitpicking, self-promo, and one very suspicious disappearing train car.