An interesting book. Much that is credible and thought-provoking. I can't meet Reanney in his more rapturous sections on the preeminence of 'selfish' genes and all-conquering DNA, but his premise that current human consciousness is no more than a stage on an evolutionary journey, the further reaches of which are no more imaginable to us than our own consciousness would have been to a flatworm, seems right.
Reading this alongside Iain McGilchrist's The Matter With Things made for intriguing cross-fertilisations and tensions.