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This illustrates an understanding of containment concepts and the consequences of the agent's own actions.
TIM> The package is in the dry dock. HOMER> Oh. (This contracts where the agent thought the package was.) TIM> Please pick up the package. HOMER> OK. (Swims into the dry dock and picks up the package.) HOMER> I'm going to the dry dock. HOMER> I've reached the package. HOMER> I'm picking it up. HOMER> I've entered the dry dock. (This realization occures a few seconds after the actual event.) TIM> Come out of the dry dock. HOMER> OK. (Agent picks an arbitrary point outside of the dry dock and goes there, still holding onto the package.) TIM> Did you remove the package from the dry dock a few minutes ago? HOMER> Yes I did. TIM> Did you bring the package into the dry dock today? HOMER> No I didn't TIM> How many ships did you see after you left the dry dock? HOMER> None.
This illustrates a conditional command.
STEVE> If you see an animal tomorrow, photograph it. HOMER> OK. (We now create a bird and position it in the water near the barge. The we advance time to the next day.) STEVE> GO to the barge. HOMER> OK. (Homer goes to the barge, sees a bird, and then maneu- vers to photograph it. If the bird should "fly away," the plan is aborted. Animals seen on subsequent days are not photographed.)