I think the occasional appearance of the UFO is a very oblique pop-cultural reference that anyone who was alive and sentient in the late 1970s will get right away.
Hank Stuever"Star Trek" expands almost instinctively - the more information you seek from it, the more it gives. It also has the benefit of taking place in our future, our mutual destinies as occupants of a peaceful, non-polluted Earth.
Hank Stuever