I felt a bit tricked by this book. The last chapter is about homeopathy, and essentially comes to the conclusion that there's "something in it" (pun not intended). Falling with my area of expertise, I can clearly see that in this chapter that the author puts far too much emphasis on extremely dubious, speculative and sometimes completely discredited pseudo-science. This is especially annoying given the homeopathy chapter comes after the chapter on the placebo effect!
All this leaves me wondering of the author has been so cavalier and credulous with the facts throughout the earlier chapters, the subjects of which which I am much less familiar with. Have I just listened to an interesting scientific take on current lack of understanding about dark matter and our current understanding of physics, or just a load of clap trap about things that aren't actually science?