Logic / Unit 1 Logic 001 short lesson, about 20 seconds
What Logic Is
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The idea
Logic is the study of what follows from what — the standards for distinguishing good reasoning from bad.
In practice
"All humans are mortal. Socrates is human. So Socrates is mortal." Logic explains why that conclusion is guaranteed.
Where people slip
Logic evaluates reasoning, not truth. Whether Socrates existed is history's job.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
- Nothing. This is a starting point.
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