Biology / Unit 8 Bio 1651 short lesson, about 20 seconds
"Evolution Is Only a Theory"
Captions available
The idea
Calling evolution "only a theory" confuses the everyday sense, a guess, with the scientific sense locked at Unit 1's Bio 0034: an explanation that has survived repeated tests.
In practice
Gravity's theory and evolution's theory both name explanations that have withstood rigorous testing, not unconfirmed guesses.
Where people slip
A scientific theory has already survived extensive testing — it is not a synonym for hunch.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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