The program has features that will warn if things are "questionable"
However, it still is a software...and it can be fooled....like the "diesel software"
For that reason the user should be aware of what he provides for data.
For some reason people seem to blame the software each time however hihi.
It is clearly described in the manual when you can "trust" the results or when you should take it as a indication
The question you raise ([USER=903]@Marconi[/USER]) is a valid one.
I remember a company who designed antennas with Eznec and published figures.
But the forgot to include the T-match (which is large in aspect to wave length / segmentation to the radiator). for that antena...believe it was on 70cm...
Without that T match..the antenna would have done its job..but with it....the pattern was disturbed, and that was picked up by some of the users.
That has lead to more questions... it is these days not uncommon to include the insulators (with there "non" electrical performance").
That is however beyond of interest on 11m since a insulator is only a fraction compared to those used in the Ghz's.
73s. H.
(in short.....if a matching system is "large'...it is of interest to model it)