Proton exchange membrane and jacquard loom: what they have in common

1. Step 1. Proton exchange membrane — is part of — Fuel cell. It lets protons through, but not electrons.
2. Step 2. Fuel cell — is made of — Platinum. A platinum catalyst.
3. Step 3. Platinum — is material for — Brain–computer interface. The electrodes are platinum or iridium.
4. Step 4. Brain–computer interface — has part — Computer. Decoding instructions.
5. Step 5. Computer — uses — Program control of a machine. A computer executes a stored program.
6. Step 6. Program control of a machine — is used in — Jacquard loom. The chain of cards is the program of the pattern.

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