The winner is watch time, not clicks. Test again before it becomes a rule.

Write ten or more titles and three very different thumbnail concepts per video, and A/B test them. The winner is the one with the most watch time, not clicks. Don't turn one test into a rule; repeat tests flipped about a quarter of the time.
S Evidence: strong. Large trials or many studies, pointing the same way.
E Evidence: built from practice. What works for coaches and practitioners. Labelled that way.
Hagar et al. 2021 (141,000 newsroom tests) · Gligorić et al. 2023 · YouTube's documentation.
Not medical, legal or financial advice.
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