People have vast background knowledge to cope with everyday situations.

We don t have to be told everything explicitly because we can call on the background knowledge.

We use `default knowledge to handle situations where knowledge is incomplete.

This is called common sense reasoning.

-People have vast background knowledge to cope with everyday situations.

We don t have to be told everything explicitly because we can call on the background knowledge.

We use `default　knowledge to handle situations where knowledge is incomplete.

This is called common sense reasoning.