Fact or Opinion?
Tell facts from opinions and pick how you'd verify each one — the core skill of thinking clearly.
Fact or Opinion Detective
A great detective always asks: Can I check this? Facts can be looked up, measured, or tested. Opinions are what people think or feel. Sort each statement and climb the detective ranks!
Detective Score
0 / 10
Statement 1 of 10
Fact or Opinion?
"Dogs make better pets than cats."
How does it actually work?
A fact is a statement that can be verified — you can check it in books, measure it, or test it, and everyone who checks carefully will get the same answer. A opinion expresses how someone feels or what they prefer, and reasonable people can disagree without anyone being wrong.
The key question a detective always asks is: How could I check this? If there is a reliable method (a ruler, an encyclopedia, a qualified expert), it is probably a fact. If checking it comes down to personal preference or values, it is an opinion.
This skill is the first step in critical thinking — separating what is true from what is believed, and knowing how to look things up. AI systems can state opinions confidently, so asking "how could I check this?" is more important than ever.