Earth, Russia, St. Petersburg, 2103. Lee walked past her to the window, behind which flyers rushed high in the sky, and slammed it with a roar - the glass rattled plaintively in the frame, but the man did not pay attention to it. Outwardly, he remained just as calm. It's about thirty meters to the ground, "he told the applicants looking at him in amazement. - You, of course, came to study as biologists, not physicists, but, I hope, the school curriculum has not yet been forgotten, so you can calculate at what speed the one who fell out of this window would hit the ground. And as biologists, I think you can imagine in all details what would have happened to his body.