If you want to find out about someone’s character you ask them how do they gauge truth, or how do they know something is true?
Most will say because so and so said so, some variant of outsourced knowledge. Some "Religion." Some "Scientist." Some "Dr." Some "Guru." Some "Parent." Some "Mother." Some "Father." Some "Thought triggered by someone else." Some “Theory.”
Rare people will say they don’t know, they’re a bit more evolved because they see the conditioning. They see the confusion.
The rarer people will say they know because they’ve observed for themselves, not blindly, but with purity enough to observe correctly.