The fittest survives. You always have to run in order to keep yourself alive. The moment you stop, you become a foundation for others to continue moving ahead. And this process is not pretty - blood, agony, death. No time to think, no time to analyze. No way you can organize things in advance, to prepare a strategy for a couple of moves ahead. People who are degraded to this situation, are very easily manipulated and managed. This is what Nazis did when they rushed people to the death in concentration camps.