Premise:
"[I]t would be pornographic, if it weren't art (Walter Kendrick, the New York Times Book Review ). Others find that the novel's format--a combination of letters and rambling diatribes--makes the story repetitious and tedious."
Hypothesis: The book, if it weren't an art, would be pornographic.

yes

Premise:
"True, the owner-manager model, successful as it has been, is not the only possible model for success."
Hypothesis: Despite it's success, the owner-manager model is not the only way to go.

yes

Premise:
"really oh i don't know"
Hypothesis: I have no idea.
yes