[sn41]

The recommendation should be based on what a large fraction of my time is spent on (average over the timeline of my history), rather than a large of fraction of people who watch the last watched video is based on. Why does one video entirely screw up my historical record? I can't remember being recommended one 3Blue1Brown video in the last year, despite being subscribed to him. It's bizarre.

[wolco2]

The ones in the sidebar are based on global patterns to that specific video.

The homepage ones should show you subscriptions videos but also based on the last keywords/videos watched.

I don't see the value in using 2012-2019 videos watched when your recent ones speak more to what you currently are interested in.

[8note]

If you turn off your history them search for 3blue1brown, and maybe PBS spacetime, you'll get 3blue1brown in your suggestions