Maybe the correct stratagy is turn the tables and try to lighten the mood of the interview if a brainteaser is asked, and sort of shuck "oh one of these things? (laugh)...ok let's work this out together" and proceed to try to engage the interviewer with estimating the number of floors in an average building, the number of windows per story, and the number of buildings, all the time asking the interviewer what his estimates would be?
Like anything to prevent yourself from locking up and taking the damn thing too fucking seriously.
The reality is we are all going to interview, they are going to mostly suck, and you will almost certainly eventually be hired somewhere.
The candidate doesn't need to know how to estimate the number of windows.
They need to know you're the sort of interviewer who likes to be the organ grinder while everyone else is the dancing monkey. Many common interview questions give this away quickly, which is useful.
Like anything to prevent yourself from locking up and taking the damn thing too fucking seriously.
The reality is we are all going to interview, they are going to mostly suck, and you will almost certainly eventually be hired somewhere.