Here's the thing though, doctors have a long storied background of not knowing what the hell they're doing. History is filled with stories of hilarious medical ineptitude, and in all likeliness, today's medical practices will be similarly snorted at 100 years down the road.
Empty definition, containing nothing; having none of the usual or appropriate contents: an empty bottle. See more.
empty set. The set with no elements. Empty Set. (or null set), the set that contains no elements. The concept of the empty set, like the concept of zero, arises from the need to have the result of any operation on sets also be a set.