Arch bridge and smart meter: what they have in common

1. Step 1. Arch bridge — has part — Arch. An arch.
2. Step 2. Arch — is made of — Brick. Arches were built of brick or stone.
3. Step 3. Brick — is material for — Power station. The buildings of the first power stations were brick.
4. Step 4. Power station — is part of — Electrical grid. Power stations feed the grid.
5. Step 5. Electrical grid — evolved into — Smart grid. A digital grid.
6. Step 6. Smart grid — has part — Smart meter. Meters.

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