I did download the entire book, just googled book name, got to his site, all I had to do was click on fb like link, provide email address and the book was mine. Although on the surface the book provided answers to some paradoxes, I cannot accept his logic of an universe part unobservable/part observable and his ideas of linkage between the two and energy transfers between the two. However his premise that mass may be a property of space with gravity an extension of that property i found interesting and plausible. This of course requires space to have some aetherlike properties, which makes some sense because transmission of electromagnetic waves and other force waves in space can be more easily explained with some sort of aether or structure to space. Interesting book with interesting but some farout ideas used to explain some difficult results from physics. It would be worth a read by some scientists so they are better able to think creatively to solve some of the problems and paradoxes in science, but the central ideas of the book are unlikely to be correct.