In the end, then, it is diffi cult to recom-mend Cycles of Time. Experts will already be familiar with the topics discussed in its stron-ger passages, such as the thermodynamic arrow of time and Penrose diagrams. And casual readers will have a hard time separat-ing the wheat from the chaff.
Because it is a supposition, a presumption. It refers to the present, not the past.
Thank you McTag.
So "its stronger passages" refers to "Cycles of Time's stronger passages?"
Quote:
In the end, then, it is diffi cult to recom-mend Cycles of Time. Experts will already be familiar with the topics discussed in its stronger passages, such as the thermodynamic arrow of time and Penrose diagrams. And casual readers will have a hard time separat-ing the wheat from the chaff.