And it was very condescending as well, like explaining to you that the sky is blue while you were debatting of the weather implications of the cloud shapes.
Oh! I am blind, and due to my disability, am treated in a condescending way on a regular basis, so I didn't even notice. But now that you point it out... I can see what you mean. However, being used to being treated like a small child by random (supposedly well-meaning) strangers is so normal to me, I failed to recognize the pattern...