[betwixthewires]

Where in the write up did he state that as a requirement? He clearly says he uses rai as an example for simplicity in explaining the mechanisms. Explaining the systems with DAI would've been much more difficult.

Collateralized loans can't result in bank runs, I don't know how you envision this working. In a downturn, people get their collateral liquidated, or exchange their stable tokens for their collateral.