If when you divide your set in two, you can reliably tell which of the two subsets definitely has what you’re looking for, then it’s binary search.

It should still at least have a fast-forward option. You go at the highest speed possible until the bike disappears. Then you rewind at a slower speed until it shows up again. Then you can play the tape from there.

Not just similar, it’s the exact same thing.

It’s a reference