Hii guys, I hate this book.In this I do not understand that why author of this is going too much.The author of this is really misunderstand by themselves, he did not think that how he go too much to this time machine’s topic.He thought that time machine is possible but according to Einstien Time travel is possibble only when we travel at speed of light.And author is directly made a machine which travels into past as well as in future.I think this is not a good choice for science lovers.