Grinding machine and internet: what they have in common

1. Step 1. Grinding machine — uses — Abrasive. An abrasive wheel.
2. Step 2. Abrasive — is used in — Waterjet cutting. An abrasive.
3. Step 3. Waterjet cutting — uses — CNC machine. CNC.
4. Step 4. CNC machine — uses — Program control of a machine. The tool’s movement is set by a program — at first on punched tape.
5. Step 5. Program control of a machine — is used in — Computer. A computer executes a stored program.
6. Step 6. Computer — is part of — Internet. The Internet links billions of computers.

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