Design Essay GSA Scotland

Hi, I have 10 days to write on this topic. Help guys please, this term is going to be a nightmare!!

“Post-modernism in design was a stylistic and not a social phenomenon. Discuss with refrence to at least two designers or design studios.”

For the examples, I chose Ettore Sottsass and Associates and the work of Mario Bellini, are they an intersting take on this topic? Could I please have your views on how you would discuss it and what material you would look at to construct such an essay.
Thanks