Smartphone and petri dish: what they have in common

1. Step 1. Smartphone — has part — Ceramic capacitor. Hundreds of ceramic capacitors on the board.
2. Step 2. Ceramic capacitor — is made of — Porcelain. A ceramic dielectric.
3. Step 3. Porcelain — is a kind of — Pottery. Ceramics.
4. Step 4. Pottery — evolved into — Saucepan. The first pots were ceramic.
5. Step 5. Saucepan — has part — Pot lid. A cap.
6. Step 6. Pot lid — is part of — Petri dish. A cap.

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