Pallet blocks and personal computer: what they have in common

1. Step 1. Pallet blocks — is part of — Pallet. Support blocks between which the forklift’s forks pass.
2. Step 2. Pallet — is used in — Forklift. It works with pallets.
3. Step 3. Forklift — evolved into — Warehouse robot. Automating warehouses.
4. Step 4. Warehouse robot — has part — Lithium-ion battery. A battery.
5. Step 5. Lithium-ion battery — is part of — Laptop. A battery.
6. Step 6. Laptop — evolved from — Personal computer. A portable PC.

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