There is 'speculation' that he will run for president again. [=some people think that he might run for president again]
The book is just a lot of idle 'speculation' about the future.
Her 'speculations' leave many questions unanswered.
(..) - Ana, you've met my mother. Hi, lovely to see you. This is my father, Carrick. Hi, its nice to meet you. Pleasure to meet you. There's been a lot of speculation! Oh my god! She exists! Its a great apartment, and the rent's not ridiculous Elliot and Jose helped us move in. (..)2015 Fifty Shades of Grey