I'll just talk generally about the need for definitions in legislation. Clearly, if parliamentarians have a clear idea of what they want to get at in particular, that should be defined in the legislation. When there are not definitions in the legislation, it can be difficult to know exactly how to implement that in the way that parliamentarians intended.
Of course, there are lots of sources for trying to find out what the definition should be. At the same time, as you noted, on a subject matter like this where there is no definition in federal law and you have to gather it from academics and others who are talking about the subject matter, that also means it's evolving. In some sense you may want some flexibility on a definition, so that it can evolve and grow through the consultation that you have.
I guess I'm saying that yes, it can be difficult—