Concrete mixer and bicycle: what they have in common

1. Step 1. Concrete mixer — uses — Concrete. It mixes concrete.
2. Step 2. Concrete — is material for — Sleeper. Today sleepers are more often concrete than wood.
3. Step 3. Sleeper — is part of — Railway track. Sleepers.
4. Step 4. Railway track — is used in — Wright Flyer. The Flyer had no wheels: it took off along a wooden rail.
5. Step 5. Wright Flyer — was inspired by — Bicycle. The experience of the Wrights’ bicycle shop — chains, light structures, the idea of controlled instability.

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