The requirement that your turns sum to zero is necessary to keep you from getting caught in certain loops, such as one shaped like a capital G (try it out on paper to see what I mean).
转身数的总和必须是零，这是为了避免陷入某些环路，比如大写字母 G 形状的环路（在纸上试着走一下这个形状，就会明白我的意思）。
3
Instead, they sum their received energies, and they send their own quantities of energy to other neurons only when this sum has reached a certain critical threshold.