There is a long chain of processes between the physical events going on in the world and the perceptual registration of those events by a human observer.

• 这类进化论解释看起来自圆其说，却很难证明或证伪，有人（比如我）就常常把它们和人择原理划归为伪科学一类，或者好听点，叫信仰。