Author does not agree with himself if this book is scientific paper or tabloid pocket book. He could avoid irritating repeating by making this book into the second. This book is really good to citate from on Friday afterwork beer with friends. There are plenty of theories which are controversial and fascinating - like reverse Darwin theory (fish is not the mamma ancestor but the opposite) - you cannot grow arms if you did not have them in the first place, but you can skip arms if you only need to swim. The Slavic and northern European feast of Midsummer/Ivan Kupala day is originally human sacrifice festival - where two humans (brother and sister) having intercourse and then being burned alive. Enjoy reading!