Re: Question About "The Chimes at Midnight"
I think the simplest hypothesis would be that upon realizing they would need to travel downtime to Earth's pre-warp era, Thelin stayed back with the rest of the landing party and did not enter the Guardian.
Of course, heck, for all we know, maybe the Enterprise
never discovered the Guardian in the first place without Spock aboard.
"Every line of serious work that I have written since 1936 has been written, directly or indirectly, against totalitarianism and for democratic Socialism, as I understand it." - George Orwell, 1946