Tea bag and data centre: what they have in common

1. Step 1. Tea bag — is made of — Paper. Filter paper.
2. Step 2. Paper — is material for — Hot air balloon. It was lined with paper on the inside.
3. Step 3. Hot air balloon — evolved into — Airship. A steerable balloon.
4. Step 4. Airship — uses — Helium. After the Hindenburg — helium.
5. Step 5. Helium — is material for — Large Hadron Collider. It is cooled with superfluid helium.
6. Step 6. Large Hadron Collider — uses — Data centre. A grid for processing data.

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