"The only way to reduce the risk of deceptive results," says Dr. Stoneham, "is to use several techniques in conjunction, to examine different aspects of the object."
And don't forget that old standby—the individual.
"The human element comes in interpreting the results of the tests," says Dr. Penny. "To say that all these methods are available doesn't mean that all are being applied. Sometimes the overwhelming evidence is such that this is not needed."