Magnifying glass and rocket: what they have in common

1. Step 1. Magnifying glass — evolved into — Glasses. Reading stones — magnifying lenses — preceded glasses.
2. Step 2. Glasses — evolved into — Telescope. The first telescopes were assembled by spectacle makers.
3. Step 3. Telescope — includes — Space telescope. A space telescope is a telescope above the atmosphere, so air does not blur the view.
4. Step 4. Space telescope — has part — Gyroscope. Pointing gyroscopes.
5. Step 5. Gyroscope — is part of — Guided missile. An inertial system.
6. Step 6. Guided missile — evolved from — Rocket. A rocket with guidance.

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