Watch with curiosity.
Leave able to explain.
Deblur stops the video where the argument turns, asks what you took in, and shows you the line you missed.
Sean Carroll · Royal Institution
What does he mean by “the past hypothesis,” and what is it doing in the argument?
While you watch, everything is clear. The argument holds. The examples land.
Three days later someone asks what it was about, and you find an impression where the argument used to be — the shape of the thing, none of its parts. The hours were real. The knowledge is not.
You can’t fix that by watching more carefully. You fix it by being made to speak.
Set an expectation
One question before you watch: what do you think the main idea will be? Answering primes what you notice.
Watch in sections
The video is cut into conceptual sections, not equal chunks. The transcript follows along underneath, line by line.
Recall, then see the gap
At each section end the video stops and asks you to reconstruct its argument from memory. Then it shows which key ideas you got, which you missed, and the exact line where each one was said.
3 sessions every 14 days
Enough to find out whether being made to speak changes what you keep.
- Full guided watch and recall grid
- A four-question final review on every video
- Your sessions saved to your account
No card. Every session you start counts toward the 3.
Start a sessionUnlimited sessions
For the weeks where the queue is long and every talk is the one you meant to watch.
- Everything in the free plan
- No 14-day ceiling — watch as much as you want
- Priority on new features
Cancel any time, from your library.
Start with the one you’ve been meaning to understand.
Take one video you’ve been meaning to get to. Give it forty minutes and find out what you can still say tomorrow.