causal loop

Named factors joined by signed arrows into a closed circuit. An arrow carries a plus when more of one means more of the other, and a minus when more means less. Count the minus signs: an even number makes the circuit reinforcing, marked R, and it amplifies whatever it starts with. An odd number makes it balancing, marked B, and it pulls back toward a target. Hash marks across an arrow say the effect lands later.

Named factors joined by signed arrows into a closed circuit. An arrow carries a plus when more of one means more of the other, and a minus when more means less. Count the minus signs: an even number makes the circuit reinforcing, marked R, and it amplifies whatever it starts with. An odd number makes it balancing, marked B, and it pulls back toward a target. Hash marks across an arrow say the effect lands later.

Example

Best when you can name the factors and defend the direction and the sign of every arrow between them.