Quote:

Why should someone who is wants to pass a polygraph examination seek advice on how to pass one, from a group of people who failed?

1.  It's not really an "examination", it's an interview/interrogation.   So the terms pass/fail aren't even applicable.  

2.  People have "failed" despite telling the truth.

3.  They, like most of the public, thought all they had to do is tell the truth, and they would, as you would say "pass".

4.  THEREFORE, there is a lot a person about to take thid so-called "examination" could learn from those people (i.e. those who "failed" despite telling the truth).

You present the question in terms of passing or failing a test.

NG1's analogy of "falling for", or "NOT falling for" a scam is more accurate.

So, what is the point in answering your question, when your question is misleading?

TC

P.S.  A person also wanting to invent the light bulb walked up to Tom Edison one day asking for advice.  At that point, Edison had failed miserably at the task.  Sancho's GGF, a well know alchemist, walked up to this man and said:  "HAH!  Why would you ask advice from a person who has failed so many times to accomplish what you are trying to do?!  Why don't you come to work for me.  I'm attempting to convert pigeon droppings into lemon drops!"