I think what we need is better understanding of how to do risk analysis of a CDO, but that they still can perform a very valuable function because they can aggregate these risks and pass them around so that mortgages or other kinds of loans can be packaged and sold to investors all over the world, who in most times, would justify a small amount of each one.
For me, language is about the impossibility of communicating what we precisely wish to communicate and this gorgeous attempt that we make to do that anyway. I love that we will never say exactly what we mean, but we will forever keep trying.