The "time machine" tells us that the world is four-dimensional, and any entity must extend in four directions, it must have length, width, thickness and duration. The time traveler invented the time machine and used it to take me on a wonderful time trip, which made me see the great changes that have taken place on the earth after 80,000 years.

At the same time ,in the time Machine, a time traveler uses a time machine to travel in different time longitudes and latitudes, recording all kinds of things that happen during his travel.For example, all the mammals in this article have become extinct, and there has been a terrible phenomenon of cannibalism.After reading this book, my inner thought is: in the rapid development of science and technology today, we should deal with the relationship between human beings and science and technology, and always have our own ideas and thinking，isn't it?