21:25We Can't Measure* Distance In Outer Space!
Save referenceExpectation Violation
You've heard distances to stars given in light years, so 'we can't measure' goes against what you were told. A tape measure from Earth to a star is how you'd picture measuring it, and the text says we don't actually know.
The asterisk after 'Measure' admits there's a catch without spelling it out, which keeps the bold claim honest and gives you a second thing to wonder about.
The yellow tape measure stands out against black space, so it reads at feed size, and the red arrow pins the doubt on the measurement itself.
If your big claim is true with a caveat, keep the claim bold and add an asterisk rather than softening it. Show the naive way people picture the thing, and point an arrow at it.
Keep the bold claim, and let an asterisk admit the catch.
Apply this pattern to your next video.
Bring the reference into a packaging brief, then decide what your title and thumbnail should each communicate.