Entropy is information. Information has a precise definition as the state of a system. An information processor, a computer, is a system that transforms its state, according to rules, into a new state. Do not underestimate the import of all this. Information is real.
Information is physical,'' Siegfried writes.
And the progression of events through time is computation, so the universe is essentially a huge, if mysterious, computer. This concept, at most a few decades old in this form, is controversial. Learned opinions vary from complete acceptance to laughing rejection. This book is personal journalism. The author has met with many of the principal movers and shakers.