blind with science

blind date

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

blind leading the blind

A situation in which an unqualified person is attempting to guide, advise, or train others.

dismal science

Economics or the field of political economy.

fly blind

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

I see, said the blind man

Expressing confusion.

rocket science

Anything overly complex, detailed, or confusing.

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.