Ask what would change it

"What would show this is wrong?"

Socratic, sharpened by modern work · Popper (falsifiability)

If nothing could ever count against a claim, it isn't telling you much. Ask what evidence would change the speaker's mind, including your own.

Socrates: 'One of those who would be glad to be refuted if I say anything untrue… just as glad, mind you, to be refuted as to refute.' (458a)

Karl Popper argued a claim is scientific only if some possible evidence could prove it wrong (falsifiability). Socrates gives the attitude, being glad to be refuted; Popper gives the test, naming what would refute it.

Plato, 4th c. BCE. Gorgias 458a (Stephanus), tr. W. R. M. Lamb, 1925 (public domain in US), via Perseus
Thornton, S., rev. 2023. 'Karl Popper', Stanford Encyclopedia of Philosophy (on falsifiability; Popper, Conjectures and Refutations, 1963)

Try this question