A* algorithm and cannon: what they have in common

1. Step 1. A* algorithm — evolved from — Dijkstra’s algorithm. Dijkstra with a heuristic.
2. Step 2. Dijkstra’s algorithm — is used in — Router. The OSPF protocol — shortest paths.
3. Step 3. Router — has part — Antenna. Antennas.
4. Step 4. Antenna — is part of — Radar. An antenna emits and receives.
5. Step 5. Radar — is used in — Anti-aircraft gun. Radar guidance.
6. Step 6. Anti-aircraft gun — is a kind of — Cannon. A gun.

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