Well, hardcore
Trek fans know that it's not really Greg's "pet theory."
Scene 44 of the Second Revised Final Draft for "Space Seed," dated December 13, 1966 has the following content:
44 ANGLE ON SICK BAY VIEWER
It is covered with mathematical symbols and diagrams. CAMERA PULLS BACK to show Khan studying with great concentration. He pushes a button. Another transparency appears: a chapter heading, reading: BASIC SPECIFICATIONS, CONSTITUTION CLASS STAR SHIP.
Scenes 47 and 48 have similar content:
From 47:
...At the door, she [McGivers] turns and looks back at him. He gives her a strong, masculine, confident smile. She is about to say something, but turns and exits. Khan turns back to his studying. He pushes a button, stares back up at his screen.
48 INSERT SCREEN
A chapter heading: Basic Propulsion Systems, Constitution Class Star Ship.
Most folks know that a graphic was made expressly for this scene:
According to this reasoning Greg Jein didn't "know" either, as he never made a reference to this explicit line "Basic Specifications, Constitution Class Starship" in his original article which I recommend reading:
http://www.trekplace.com/article10.html
I have strong doubts whether this line is even authentic (this is a script for an episode and not the writer's guide. I believe in real life it would have read "basic specifications of the Enterprise" as most people involved with the production, like Bob Justman, would have otherwise wondered "What the heck is a Constitution Class Starship?").
But regardless, the only graphic (illustrated above) indicating the existence of a Constitution Class was shown in the "Trouble With Tribbles" as a part of a technical journal Scotty was reading, showing a schematic of a
Primary Phaser L.R (neither basic specifications of the
Enterprise nor its propulsion system!) that obviously belongs to a
Star Ship of a
Constitution Class.
As any "hardcore" fan knows (sorry, I couldn't resist the urge to return the "favor"

) the name "Constitution" wasn't even among the first name proposal lists for "the 12 ships of the
Enterprise Starship Class" (Bob Justman) seven months later in August 1967.
Admittedly, it's tempting to make a connection between the final (!) "Constitution" name proposal and the "Constitution Class" small print on that graphic (indiscernable for the audience to read), but there's Bob Justman's slip of the tongue
and Walter Matt Jefferies' clear statements
and production sketch that state that the
Enterprise was "the first bird", "the first in the series" and the name giver to the Enterprise Class (originally a believer of the "Constitution Class Theory" myself, I couldn't disregard the original producers' / creators' intentions any longer and felt it inevitable to take the red pill).
These are the facts and thus it's not a "pet theory" of mine, and I reject the notion I'm biased against Greg Jein because the contrary is the case.
In his article Greg Jein did an excellent research and came up with various impeccable and logical conclusions (e.g.: although
Excalibur and
Essex aren't identified as "starships" in the original "Amok Time" script, the final episode's script refers to "starships" the
Enterprise is supposed to rendezvous with at Altair). It appears he was under the impression, then, that "starship" could only refer to sister ships of the
Enterprise and not just the top-of-the-line vessels of Starfleet.
When he read "his" name list backwards and matched it with the starship status chart in "Court-Martial" he seemingly got the correct names with the corresponding numbers (his "pet theory").
Strangely, he didn't feel it necessary to explain why starships beginning with a "16" prefix should also belong to a Constitution Class whose very first ship supposedly began with "NCC-1700".
Further down, he even suggested
himself that "the first part of the graph" in the status chart indicated "heavy mechanical labor/
construction" which was exactly the case for "NCC 1700" which was the farthest from being complete (rather odd for the very first ship of the class, IMHO).
Unfortunately, he didn't elaborate on these obvious discrepancies and/or flaws of his theory, but encouraged the reader to feel free
"to regard this with approval, disapproval, or indifference."
Merry Christmas, Happy Holidays and a great start into the new year! (We made it through 2012 and will hopefully survive the catastrophies of 2013 as well
) Keep on Techno-Trekking!
Bob