>Just use the Ask button on YouTube videos to summarize,

For anyone confused because they don't see the "Ask" button between the Share and Bookmark buttons...

It looks like you have to be signed-in to Youtube to see it. I always browse Youtube in incognito mode so I never saw the Ask button.

Another source of confusion is that some channels may not have it or some other unexplained reason: https://old.reddit.com/r/youtube/comments/1qaudqd/youtube_as...