blind leading the blind

blind date

A date (romantic meeting) between two people who have never met before.

blind with science

To overwhelm someone with details in order to influence or mislead them.

fly blind

To do by guesswork; to feel one's way.

I see, said the blind man

Expressing confusion.

leading light

An acclaimed expert, one of the foremost experts, a luminary.

turn a blind eye

To deliberately or knowingly ignore, overlook, or refuse to acknowledge something, especially when improper or unpleasant; to look the other way.