For me:
- System: Anarcho-Capitalism.
- Money: Hashgraph based stable coin, with Multisig wallets.
- Written Language: Korean Language- Hangul.
- Number System: Kaktovik Numerals.
- Calculator System: RPN
- Clock System: Swatch Internet Time
- Calendar: Solar Hijri calendar.
No scarcity,
No fertility (mandatory sterilisation),
No religion,
No puritanical laws,
No censorship