My point Fyron, which suprisingly you seem to have totally missed, is that you can't say shield frequencies are junk science, or technobabble, or unrealistic. Since energy shields are totally imaginary and a fabrication of the authors of the particular science fiction, you cannot say exactly how they will or wont work in reality, and so you can't say that any particular authors version of them is unrealistic. In Star Trek shields have frequencies that can be matched to penatrate them. This is totally reasonable and realistic from the perspective of the Trek universe, because that's how shields work in the Trek universe.
You are free to say this is stupid or poor writing if you want, but don't try to tell us it's junk science. Doing so removes any usefull meaning from the term junk science.
You could call it Junk Science Fiction if you want.
