Problems and questions in physics always cause violent clashes of positions and a real battle of minds. Our test today is quite simple in its content, but we are sure that it also initiates a lot of disputes.
"I don't quite understand you," the Engineer said. - You're talking about an artificial universe. Can you do it? To close the space and time around a specific mass? Are you kidding? It's very difficult (Clifford Simak, Space Engineers).