Unit 2 · Lesson 2• 23 min
Validity vs. Soundness
Today's lesson
Validityvs.Soundness
Two arguments can have the exact same logical…
Quick Check
1. An argument with true premises and a logically necessary conclusion is:
2. An argument can be valid but still prove nothing useful if:
3. True or False?
"If an argument is valid, its conclusion must be true."
Answer all 3 questions to check.
A challenge round will appear here shortly.
Takeaway
Judge every argument in two steps: is it valid (structure), and is it sound (true premises)…