Why didn the dog-Thing assimilate Clark?
Clark tells Blair that he was alone with the dog-Thing for “an hour, hour and a half maybe” but later on he passes the blood test. A lot depends on when Clark was alone with the dog-Thing. Judging from the clock on the wall of the recreation room, the dog-Thing arrived at Outpost 31 at around 8:30 AM and wasn’t caged by Clark until 7 PM. So when during this period was Clark alone with the Thing? The script indicates that Clark was supposed to be alone with the dog-Thing immediately after its arrival.
