Bayonet and paper machine: what they have in common

1. Step 1. Bayonet — is part of — Musket. A bayonet.
2. Step 2. Musket — evolved from — Hand cannon. A hand-held gun.
3. Step 3. Hand cannon — evolved from — Fire lance. A metal barrel instead of bamboo.
4. Step 4. Fire lance — is made of — Paper. The barrel of a fire lance is a paper or bamboo tube.
5. Step 5. Paper — uses — Paper machine. Industrial production.

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