If you hold Dai without opening a CDP, the only way to convert that Dai back to Eth is to find someone who opened a CDP and is willing to buy from you.
Similarly, if you opened a CDP and then sold the Dai, the only way to get your Eth back out of the CDP is to find someone who is willing to sell you Dai. The Maker liquidity crisis yesterday happened because there were more people trying to scoop up Dai and get their Eth out of their CDPs than there were people selling Dai, which meant that a lot of people were stuck holding leveraged positions on Eth that they couldn't exit. Even worse, the auction system was malfunctioning, so it appeared as though those people may not even get a fair value for their Eth if they did get liquidated (not to mention, they'd also have to pay the 13% fee for being liquidated, even if they got a fair price in the auction).
> An important part of DeFi are DEXes (decentralised exchanges) such as Uniswap and Kyber. There is a liquidity pool where you can instantly buy/sell assets.
This only works if the total number of buyers and sellers are balanced. The way Maker is set up right now, its possible for a large percentage of your Eth pool (or Dai pool) to be completely unavailable because the holders have not listed the Dai on an exchange. Simply having a decentralized exchange does not automatically guarantee liquidity - people have to agree to sell their assets on that exchange.
> You can do this easily by buying DAI on a DEX
The entire problem yesterday is that all of the Dai was scooped up from all of the Dexes. There was a period yesterday where the Dai price was >$1.11, meaning that CDP holders were paying an 11% premium to exit their positions. The Maker system had no exit valve for people stuck in this position.
> The DeFi, specifically the Ethereum space, has moved very quickly in a short amount of time, so there are a lot of new concepts and instruments out there.
There are also a lot of old concepts and well understood financial relationships that are being ignored, and a lot of highly predictable failure modes that are being forecasted as "black swans". The best team is likely composed both of people who have a very solid background in cryptocurrency as well as people who have a very solid background in traditional finance.
It's important to note that the vast majority of people who will own and use Dai have never and will never interact with the Maker protocol or CDP holders. You trade ETH to Dai on Uniswap and go about your day. You trade the Dai to ETH on Uniswap later. I'd expect most people just to go from fiat straight to Dai and back as well.
Maker itself is a system for the professionals and most users won't even know it exists and won't have to.
If you hold Dai without opening a CDP, the only way to convert that Dai back to Eth is to find someone who opened a CDP and is willing to buy from you.
Similarly, if you opened a CDP and then sold the Dai, the only way to get your Eth back out of the CDP is to find someone who is willing to sell you Dai. The Maker liquidity crisis yesterday happened because there were more people trying to scoop up Dai and get their Eth out of their CDPs than there were people selling Dai, which meant that a lot of people were stuck holding leveraged positions on Eth that they couldn't exit. Even worse, the auction system was malfunctioning, so it appeared as though those people may not even get a fair value for their Eth if they did get liquidated (not to mention, they'd also have to pay the 13% fee for being liquidated, even if they got a fair price in the auction).
> An important part of DeFi are DEXes (decentralised exchanges) such as Uniswap and Kyber. There is a liquidity pool where you can instantly buy/sell assets.
This only works if the total number of buyers and sellers are balanced. The way Maker is set up right now, its possible for a large percentage of your Eth pool (or Dai pool) to be completely unavailable because the holders have not listed the Dai on an exchange. Simply having a decentralized exchange does not automatically guarantee liquidity - people have to agree to sell their assets on that exchange.
> You can do this easily by buying DAI on a DEX
The entire problem yesterday is that all of the Dai was scooped up from all of the Dexes. There was a period yesterday where the Dai price was >$1.11, meaning that CDP holders were paying an 11% premium to exit their positions. The Maker system had no exit valve for people stuck in this position.
> The DeFi, specifically the Ethereum space, has moved very quickly in a short amount of time, so there are a lot of new concepts and instruments out there.
There are also a lot of old concepts and well understood financial relationships that are being ignored, and a lot of highly predictable failure modes that are being forecasted as "black swans". The best team is likely composed both of people who have a very solid background in cryptocurrency as well as people who have a very solid background in traditional finance.