Backward chaining in artificial intelligence

Question

I need to understand the Backward chaining concept in expert systems (artificial intelligence) without using formal logic.

Answer 1

If you have the rule

it_rains -> street_is_wet

which means that if it is raining the street is wet. Then backward chaining means that if you want to know if the street is wet you have to check if it is raining. So you go backwards through the rule.