Cube core mechanism and smartphone: what they have in common

1. Step 1. Cube core mechanism — is part of — Rubik’s Cube. The central mechanism with axles.
2. Step 2. Rubik’s Cube — uses — Algorithm. Solved with algorithms.
3. Step 3. Algorithm — is used in — MP3. A compression algorithm.
4. Step 4. MP3 — is used in — Smartphone. The smartphone absorbed the functions of the digital player.

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