Subject Matter

• It is possible to light a bulb with just a wire and a battery.
• Four configurations with one wire and a battery work to light the bulb.
• We all have implicit models for what we think is going on when the bulb lights.

Causality

• A Simple Linear Model does not explain how a simple circuit works.
• It is important for us to unpack our own causal models for what makes the bulb light and to revise them as suggested by the evidence.