18:05why it took 200,000 years to invent the wheel
Save referenceCuriosity Gap
A wheel looks like the simplest invention there is, and the slide agrees with 'easy lol'. Then the title says the wheel took 200,000 years. If it's that easy, what took so long?
'invent' makes the wheel a problem someone had to solve, not an obvious object, and 200,000 years says it took most of human history to crack.
The mic, the projected slide and the arrows make it look like a school talk, and the deadpan 'easy lol' sets up the joke the title then knocks down.
When your topic looks simple but has a surprisingly long or hard history, label it 'easy' in the thumbnail in a deadpan way. Put the real, huge number in the title so the two contradict each other.
Call it easy, then put the huge number in the title.
Apply this pattern to your next video.
Bring the reference into a packaging brief, then decide what your title and thumbnail should each communicate.