GridVids

Sleep timer

Choose when playback should stop.

Sign in with YouTube

Are numbers actually real?

Hannah Fry Feb 15, 2025 09:00
Create an account to hide videos, mark them watched, or save them to Don't Miss.
Don't Miss
Create an account to hide videos, mark them watched, or save them to Don't Miss.
Mark watched
Create an account to hide videos, mark them watched, or save them to Don't Miss.
Hide
Open in popup Open on YouTube
Share video

Share video

Copy the GridVids link or iframe code.

Video link
Iframe code
Iframe content

Watch more
Your shower thought for the day: Are numbers actually real? Do they exist outside of human thought?? What precisely IS "twoness"??? 🤯
People & Blogs