About the book: 2007 / It would seem that when everything on Earth and in the Universe has already been discovered and solved, scientists from the Institute of Crazy Physical Theories declare that parallel to ours there is a conjugate space , in which, side by side with our Earth, many more Earths with their own history and geography are imperceptibly present. The young scientist Daniil Baturin goes to one of these worlds and gets stuck there for a long time. It turns out that history could have gone a different way: Caesar did not cross the Rubicon, but did cross-stitch, America was discovered by drunken Etruscans, not Columbus, the Drevlyans killed Prince Igor and reigned in Kyiv, and the hordes of Genghis Khan never left their steppes. However, people remain themselves everywhere and in all unpredictable worlds they make the same mistakes...