又搞到3点，还是没有找到问题在哪，不过已经排除了是forward的问题

algorithms/neat/genome/origin_neat/activations.py

@@ -0,0 +1,17 @@
+"""
+Has the built-in activation functions,
+code for using them,
+and code for adding new user-defined ones
+"""
+import math
+
+def sigmoid_activation(z):
+    z = max(-60.0, min(60.0, 5.0 * z))
+    return 1.0 / (1.0 + math.exp(-z))
+
+
+activation_dict = {
+    "sigmoid": sigmoid_activation,
+}
+
+full_activation_list = list(activation_dict.keys())