UNKNOWNS

The Unknowns are by definition, unknown.

That said, it is often common to hear someone say, "How could I know the unknowns."

Many dentists will often ask, "How could I be EXPECTED to know the unknowns?"

The truth is that most often, the unknowns that the dentist claimed were unknown, were only unknown to him or her  BECAUSE, they were to lazy to learn the KNOWN facts.

It is true, that you can NEVER KNOW THE TRUE UNKNOWNS, but it is our obligations as professionals to learn everything that we can because most things ARE KNOWN.