Lecture: 如果predator能够预知prey会做出什么样的行为，那就便于他们捕食了。可是有的动物可以有一些mechanism，让predator无法预知猎物下一步的行为。比如squid. 1）squid并不走直线，速度也不很确定。它会变速，走zigzag那种pattern，于是predator无法anticipate它的行为，就不好抓到它； 2）squid可以变色。比如pink-blue-white这种。比如predator一直在盯着一个pink的东西跑，结果bang，pink的东西不见了，来了个blue的，那么predator就会confuse，于是squid就有机会escape.
Predators can catch the preys easily by predicting preys’ behaviors. But the professor says that some preys have certain mechanism to confuse predators so that they can escape successfully. Take squid species as an example. Firstly, they don’t move in a line and they always change their speed. They often move in a zigzag pattern so predators can’t anticipate their next behaviors, thus missing the target. What’s more, squids can change color. For instance, predators have stared at the pink quid for a long time, but it suddenly changed its color into blue. Then the predators will be confused immediately, which will give squid a good opportunity to escape. (109 words)
