Die faces with pips and liquid-propellant rocket engine: 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 — works like — Playing cards. Chance in games.
3. Step 3. Playing cards — is made of — Paper. Cards were printed on paper.
4. Step 4. Paper — is material for — Rocket. The first rockets were paper tubes filled with gunpowder.
5. Step 5. Rocket — evolved into — Liquid-propellant rocket engine. Goddard switched to liquid fuel.

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