About

WhyBench answers the questions people actually type into a search box. How does GPS know where you are. Why do batteries get worse. Why do planes fly so high. Each answer is under a minute, drawn rather than stock footage, built in three numbered steps, and ends with one line you can say back to someone.

The shape of every answer

The same structure every time: the question, the surprising true thing, the mechanism in three numbered steps, a line to remember. One idea per video, one diagram that does the explaining, no music under the voice, captions always. The article version of each question adds acheck yourself block, with the answer one click away, and the sources.

That structure is built to published accessibility guidance for learning media: CAST's Universal Design for Learning, the W3C's guidance on accessible media, and the BBC's subtitle guidelines. Predictable structure, visible progress and no competing audio make an explanation easier to follow for a lot of people, and no harder for anyone.

The standard

Every number has a source. Sources here mean agency and standards-body pages, textbooks, peer-reviewed papers and manufacturers' technical documents: NASA, NIST, the BIPM, GPS.gov, a battery maker's datasheet. An encyclopedia entry is a pointer, not a source. "Roughly", "about" and "typically" are allowed; unsourced precision is not.

Each piece is checked twice before it is recorded: once listing every claim against its source, and once reading the finished script against the sources trying to break it. The sources are listed at the end of every article and in every video description.

Penny

Penny is the host. She is drawn, not filmed, in the channel's own shapes: an ivory face, a teal bob, a navy top, and the spark from the mark as her hair clip. She is named for the moment the penny drops, which is the moment every answer is built to reach. The diagram still does the explaining; Penny reacts to it and points into it, so the eye lands on her first and then follows her gaze to the part that matters.

If something is wrong

Say so in the comments on the video or on X. A correction is made in the text, listed at the end of the article it affects, dated, and pinned on the video. Corrections are never deleted.

Who makes it

WhyBench is made in Australia by one person, independently. It is unsigned on purpose: the questions are the point. The voice is synthetic; the script behind it is written by a person and checked against the sources before anything is recorded, and the same checks apply to the article, the steps and the questions at the end. Nothing here is affiliated with any organisation mentioned. For anything that needs a reply, the contact email is on the YouTube channel.

Elsewhere

YouTube for the Shorts and the full answers, Instagram and TikTok for the same Shorts, X for the occasional link, and RSS for these articles.