GISTIL
Entrar

Notas de campode uma biblioteca medida

O que os vídeos medidos nos ensinaram

Avaliamos vídeos do YouTube pelo quanto da duração realmente entrega algo. Estes são os padrões que apareceram quando já havia vídeos suficientes para contar.

Mediana de enrolação 36% início mediano da parte útil 0:47 recalculado 19 Oct 2026

  1. Artigo1 de set. de 20266 min

    Where our numbers come from, and where they do not apply

    Nine places where the measurements on this site stop being trustworthy, written down in one page so they do not have to be rediscovered one argument at a time.

  2. Relatório de dados1 de set. de 20266 min

    Shelf life: how long the material in a video stays true, by subject

    Measured shelf life runs from 84.8 in science to 37.9 in tech news — a 47-point gap. Runtime does not predict it and neither does difficulty. Subject does.

  3. Relatório de dados1 de set. de 20266 min

    Does a longer video teach you more? We checked, and the answer is yes

    Measured depth rises by 31 points from the shortest videos to the longest, holds inside every subject we can test, and buys less usefulness than you would expect.

  4. Artigo1 de set. de 20264 min

    Do you need an account to use Gistil? Mostly, no

    Reading a measurement we already have takes no account. Asking for a video nobody has measured yet does. Here is exactly where the line sits, and why it is there.

  5. Relatório de dados1 de set. de 20267 min

    A chapter list tells you where things are, not which one is worth watching

    Section by section across the library. The parts a chapter list would call content vary by 34 points inside a single video, and length barely predicts which is which.

  6. Artigo26 de ago. de 20265 min

    How to build a watch-later list you actually finish

    The list keeps growing because saving is free and watching is not. One rule, applied at the moment you save, fixes most of it.

  7. Relatório de dados26 de ago. de 20266 min

    The shape of a YouTube video: every value curve overlaid

    Average measured value climbs fast, holds through the middle two-thirds of a video, then falls sharply near the end. Here is the curve, averaged across the library.

  8. Artigo26 de ago. de 20265 min

    How to tell a good tutorial from a bad one in thirty seconds

    Six signals readable from the page before you commit any time, each tied to something we can actually measure across the library rather than a hunch.

  9. Artigo26 de ago. de 20266 min

    How to skip to the part of a YouTube video that actually matters

    Five ways to find the useful part of a video without watching the setup, ranked from the one everybody already tries to the one that works before you press play.

  10. Artigo26 de ago. de 20265 min

    How to search inside a long video without watching the whole thing

    Browser search only reaches the text on the page, not what's said. Chapters, comments, and the written record of the video each cover a different gap.

  11. Relatório de dados26 de ago. de 20266 min

    Runtime is a useless filter: longer videos carry less padding, not more

    Padding falls from 45% under ten minutes to 28% over an hour, and measured value rises the same way. Picking the shorter video is, on average, backwards.

  12. Artigo26 de ago. de 20265 min

    Is watching at 2x speed actually helping you learn?

    Speed compresses a video uniformly, filler and substance alike. Where doubling the speed helps, where it quietly breaks comprehension, and what it does not fix.