Building a logical argument
Strong vs. weak logic
Spot it
100

The main statement or position that an argument is trying to prove.

What is claim

100

Which is stronger support for an argument:
one person’s opinion or data collected from thousands of people?

What is data collected from thousands of people

100

If an add for a restaurant comes up and reads "Come down to Lake View Restaurant, 96% of our guests state they are happier after stopping by." What part of this makes it Logos?

What is the percentage.

200

Facts, statistics, examples, or research used to support a claim.

What is evidence.

200

An argument that uses reliable research and multiple sources is considered this.

What is strong evidence.

200

“Eating Chocolate X improves memory. 80% of people who tried it said they felt sharper.”

 Identify the logos element and explain the logical weakness.

  • Logos: “80% of people who tried it said they felt sharper” (statistical evidence)

  • Weakness: Self-reported data cannot prove causation

300

The explanation that shows how or why the evidence supports the claim.

What is reasoning
300

Evidence from a scientific study conducted by experts is generally considered this type of evidence.


What is reliable (or credible) evidence.

300

City parks increase happiness: people who visit parks exercise more, socialize more, and report less stress.”

Construct the claim, evidence, and reasoning that makes this logos.

  • Claim: Visiting city parks increases happiness

  • Evidence: Parks → more exercise, socializing, less stress

  • Reasoning: Each factor logically improves well-being, supporting the claim