Persistence of vision and chisel: what they have in common

1. Step 1. Persistence of vision — is used in — Cinema. The illusion of motion.
2. Step 2. Cinema — uses — Cinématographe. Cinema began with the cinématographe.
3. Step 3. Cinématographe — was inspired by — Sewing machine. Louis Lumière said he came up with the intermittent film feed while watching the fabric feed of a sewing machine.
4. Step 4. Sewing machine — has part — Needle. A needle with the eye near its point.
5. Step 5. Needle — uses — Wedge. The point pushes the material apart like a wedge.
6. Step 6. Wedge — is used in — Chisel. The cutting edge is a wedge.

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