It tells us going too far is as bad as not going far enough.

它告诉我们这样的道理：做得过分和做得不够都是不对的。

That's the story of "Draw a snake and add feet to it." it tells us going too far is as bad as not going far enough.

它告诉我们这样的道理：不注重客观事实，做了多余的事情，反而不好。

Everything going too far as bad as not going far enough, become a problem too much it is resources waste not only, and can pound original and cognitive structure.

凡事过犹不及，做题太多不仅是资源浪费，而且会冲击原有认知结构。