[Scully]

The author(s) should be neither pathologically gullible nor pathologically skeptical....

Wow, that narrows the field somewhat ;)

[NukeMan]

I hear ya! One man's open-mindedness is another man's irrationality, etc. It might be hard to keep an open mind on this topic.

John Mack & Whitley Strieber are too gullible, and CSICOP is too skeptical...
Or are they? ;)