Ollie is teaching their dog to ring a bell to go outside. Ho…
Ollie is teaching their dog to ring a bell to go outside. However, outside is not available for at least two hours after the most recent trip outside. Ollie turns the hallway light on when outside is available, and turns the hallways light off when it isn’t. Ollie learns to ring the bell only when the hallway light is on. This is an example of:
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