When selling Scarcity back to Behodler small fee is levied and burnt. The remaining Scarcity is then used to redeem the token in question. This small friction leads to gradual growth in the pool of ALL tokens. The value of Scarcity rises in this way because the amount of any token that Scarcity can be redeemed for gradually increases with every trade. Unlike multi-token liquidity pools, there is minimal impermanent loss. Instead, frequent trading will gradually grow the liquidity base and increase the value of the Scarcity token as measured in the basket of underlying tokens.