I posted on this matter under a separate heading a few days ago.
> Collins is a sociologist.
> Collins understands physics.
> Therefore, all sociologists understand physics.
I think you may be missing some history. IIRC Collins is considered one of the bad STS types (perhaps not as bad as Aronowitz ;-)). Someone quoted Hacking a while ago. Hacking uses Collins as such an example in his book (again IIRC).
--ravi