Algorithmic stablecoins are crypto coins that are pegged to the price of a particular asset by math. That math can change. It is very important that trusted parties are the only ones who can change that math. This can be tricky when a project is open source and decentralized like cryptocurrencies are. Thus there is something called Governance Tokens. Tribe is the governance Token for FEI algorithmic stablecoin. The FEI coin uses another coin called PCV that backs its value at $1. TRIBE holders control the wallet and algorithm that backs the FEI and the PCV coins. Who controls the Tribe, controls the algorithm. This ensures that the people who are guiding the algorithm have the best interests of the community in mind, since they rely on the FEI coin.