Words are what people want you to believe. Hands are what they actually do.

Talk is a statement of intention, and intention is cheap at the moment of speaking. Behaviour has a price attached, which is why it makes the more reliable record. Someone who keeps saying the right thing and doing another thing is not always lying to you; often they mean it sincerely for as long as the sentence lasts.

Watch the pattern across a month rather than judging any single moment. Who turned up, who followed through, who remembered without being reminded. Run the same test on yourself and see where your hands disagree with your words.