Thanks.
I was going to post a WTF moment in the series that had no answer, but realized that it was answered.
In
ST: Enterprise, the Klingons had the cranial ridges.
In
ST:TOS, the Klingons in
The Trouble with Tribbles did not have the cranial ridges.
In
STS9, in
Trials and Tribble-ations, the DS9 crew ended up back in time on the Enterprise in the same episode of Trouble with Tribbles, and they all ended up looking at Worf in askance about the ridges, which he states that it was a long story that the Klingons don't explain to outsiders.
Turns out that it was explained in the
ST:ENT show,
Afflicted. But even that happened before
Trouble with Tribbles.
So the question now, is if the time between
Trouble with Tribbles and
Search for Spock is that short, The Klingons in
Search for Spock had the cranial ridges.. so looking at the timeline, for 110 years (beginning of
ST:ENT to the beginning of
ST:TOS), they had ridges, but from
ST:TOS to
Search for Spock, they lost them and gained them back. What happened from a 110 year period for an injection of a few Klingons to cause the entire race to lose the ridges and gain them back?
The logical answer (yes, I know what I did there
) is advancement of make-up in Hollywood, but that's a severe gap, considering the timeline of the Star Trek universe.
Side note: I may have to watch that episode (I originally couldn't get past the pilot), as the Klingon in that episide (K'Vagh) is one James Avery - Uncle Phil from
The Fresh Prince of Bel Air, while Ensign Rivers is one Seth MacFarlane, of
Family Guy fame.
BL.