In the past, when we played tokens on the chain, there were basically two specifications: one ️⃣ Fungible: Just like money, there is no difference between 100 yuan and another 100 yuan, it can be exchanged and split. For example, ERC-20 tokens. two ️⃣ Non Fungible: Each one is unique and cannot be interchanged. Like NFT artworks and concert tickets with seat numbers. For example, ERC-721 token. And @ burnt_xion's Fungible Duality (which can replace the dual form standard) is equivalent to directly "combining" these two characteristics. intend: The XION in your hand can be spent, split, and exchanged like money; You can also add unique features to it (such as a certain number or special attribute); It can even be split while maintaining uniqueness. In this way, a token can be used as currency and carry special value like an NFT - a bit like the "limited edition commemorative edition 100 yuan" in your wallet, which is both money and a unique collectible. I think if this is used well, it will make the gameplay and business model of the token more flexible, especially suitable for scenarios such as games, membership cards, tickets, and on chain identities.