About

Inside All the Things is a free website and YouTube channel that shows how everyday things work. Each explainer is one working model of a mechanism: a door lock, a click pen, a toilet tank. You can operate it yourself, pull it apart, and play a short narrated walkthrough.

Built from code

Every model is built from code. Nothing is drawn by hand and nothing comes from an image or video generator. The parts move because of their shapes, the way the real ones do, so the page you play with and the film on the channel are the same model and cannot disagree.

Checked for accuracy

Each model is checked against the real mechanism: the parts, what they are called, and the order things happen in. Where something is simplified so you can see it, the page says so in a list called “What is simplified”.

Corrections are welcome

If something here is wrong, please say so. Tell us which explainer and what is off, and a source helps if you have one. Mistakes get fixed, on the page and in the film.