Brain–computer interface and rope: what they have in common

1. Step 1. Brain–computer interface — has part — Amplifier. A bioamplifier.
2. Step 2. Amplifier — has part — Triode. Tube amplifiers.
3. Step 3. Triode — is made of — Tungsten. The filament is tungsten.
4. Step 4. Tungsten — is material for — High-speed steel. Tungsten.
5. Step 5. High-speed steel — is used in — Lathe. Cutting tools.
6. Step 6. Lathe — has part — Rope. The bowstring wraps around the workpiece and turns it.

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