I’ve been chiseling away at ** Cycles of Time** (2010), by

**Roger Penrose**. I say “chiseling away,” because Penrose’s books are dense and not for the fainthearted. It took me three years to fully absorb his

*The Emperor’s New Mind*(1986). Penrose isn’t afraid to throw tensors or Weyl curvatures at readers.

This is a library book, so I’m a little time constrained. I won’t get into Penrose’s main thesis, something he calls *conformal cyclic cosmology* (**CCC**). As the name suggests, it’s a theory about a repeating universe.

What caught my attention was his exploration of **entropy** and the perception our universe must have started with extremely low entropy.