Each one of us lives by a moral code. Some of us espouse a different one from what we in fact live by.

In the latter category IMO these people have never been placed in a situation where their supposed morals have really been tested. It is easy to say you'll put two others before yourself, but most people if push comes to shove will push and shove to preserve themselves.

I have asked the initial postulation asked in different ways many times. Most people initially desperately to add extra dimensions to the question to avoid answering it. Most like to think that they'd do the right thing, but faced by the choice know that they wouldn't.

It is far better to know your own moral code than to try to work out what it should be.