Tablet (medicine) e knife: o que têm em comum

1. Passo 1. Tablet (medicine) — utiliza — Hydraulic press. Tablets are pressed.
2. Passo 2. Hydraulic press — inclui — Prensa de forja. A press.
3. Passo 3. Prensa de forja — evoluiu de — Steam hammer. Pressing instead of striking.
4. Passo 4. Steam hammer — evoluiu de — Hammer. A steam hammer is a hammer lifted by steam, used to forge huge parts.
5. Passo 5. Hammer — evoluiu de — Stone tool. The first hammer was a stone in the hand.
6. Passo 6. Stone tool — evoluiu para — Knife. The first knives were stone flakes.

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