He is answering a question about what regulation is needed when so many borrowers are "illiterate" in respect to the obligations they have actually taken on
Greenspan speaks about avoiding catastrophies and how they can and have been "arbitraged away" including avoidance of the crisis in currency which was avoided he then says
'What was utterly unexpected was that these triple A (missed that word) and Collateralized Debt Obligations basically backed by subprime American mortgages would turn out to be a misreading of what their potential values were. That came as a shock. Remember when P&P Parabar (?) set this whole thing off what was utterly shocked by the fact that they thought they had triple A assets and turned out not to be the case. That set the whole chain. What was important about that was that is that it was utterly unexpected. The next crisis we will have and we will have one will be totally unexpected, I don't know how essentially one resolves that'
the Q&A #4 video at the link had a question about 'hindsight'
http://www.democraticunderground.com/discuss/duboard.php?az=show_mesg&forum=389&topic_id=5084773&mesg_id=5084773http://www.democraticunderground.com/discuss/duboard.php?az=show_mesg&forum=389&topic_id=5084773&mesg_id=5084773