What are inference engines?

An inference engine is like a detective who solves puzzles using clues you give them.

Imagine you have a box full of toys, some are cars, some are blocks, and others are balls. Now, imagine your friend says: "I picked a toy that has four wheels." Your job is to figure out what kind of toy it is. That’s like inference, using the clues (four wheels) to guess the answer (it's probably a car).

Now think of an inference engine as a super-smart detective who can solve many puzzles at once, even if they’re tricky or have missing pieces.

An inference engine takes facts you give it and uses rules to find out what else must be true. It's like having a list of clues and a set of "detective tools" that help you figure things out step by step.

For example, if you tell the detective: "All cars have four wheels." And then say: "This toy has four wheels." The inference engine uses its tools to decide: "That must be a car!"

It's like having a puzzle-solving robot who never gets confused, even when there are lots of clues or some pieces are missing.