Software and glasses: what they have in common

1. Step 1. Software — includes — Video game. Software.
2. Step 2. Video game — evolved from — Board game. Games on a screen.
3. Step 3. Board game — uses — Dice. Dice.
4. Step 4. Dice — is made of — Bone. Ancient dice were carved from animal bones.
5. Step 5. Bone — is material for — Spectacle frame. The first frames were made of bone and horn.
6. Step 6. Spectacle frame — is part of — Glasses. A frame.

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