Hey! I'm a scientist - we're not all geeks (he says hanging out on a BBS devoted to Star Trek AND RPGs...)!
Still... SCIENCE! TNG and VOY never really put the role of Science Officer to full use. Sure, engineers and Ops officers know a bit, but what you need is someone with a knowledge of several fields, who can tie it all together. Someone like that should be in on any discussion of a new phenomena, trying to modify systems to do the unusual, etcetera.
"That might have been the biggest mistake of my life..."
"It is unlikely. I predict there is scope for even greater mistakes in the future given your obvious talent for them."
Vila and Orac, Blake's Seven