Die faces with pips and vacuum pump: what they have in common

1. Step 1. Die faces with pips — is part of — Dice. Six faces with dots from 1 to 6.
2. Step 2. Dice — is made of — Bone. Ancient dice were carved from animal bones.
3. Step 3. Bone — is material for — Needle. The first needles with an eye were carved from bone.
4. Step 4. Needle — is part of — Syringe. A hollow needle.
5. Step 5. Syringe — works like — Piston pump. A syringe is a hand-operated piston pump.
6. Step 6. Piston pump — evolved into — Vacuum pump. Guericke adapted the piston pump to pump out air.

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