Price feeds. Today, prices are mainly supplied by decentralized oracles which are, in our opinion, very dangerous. There have been various instances where it has been proven that they have been manipulated and as a result funds were lost. There’s a tendency to think that funds could only be lost through hacking. DeFi as we know it today is heavily reliant on oracle solutions which are a simple but deceptive solution: they provide information from the outside world in the blockchain but they do this at the cost of increasing significantly the attack vectors against the protocols and the funds it secures. There are many instances where the protocol does not need to know external prices and actions that are implemented on chain can be moved off-chain to arbitrageurs for example. Oracles moreover, open the doors for black swan price movements which could topple the DeFi space. We chose to build DEXTF without oracles as we believe that arbitrageurs are a much better solution.