The inevitability of profound credit losses here is unnervingly similar to the inevitability of profound losses following the dot-com bubble. In that event, it wasn't just that people were excited about dot-com stocks in a way that might or might not have worked out depending on how fast the economy grew. Rather, it was a structural issue that related to the dot-com industry itself – those bubble investments couldn't have worked out in a competitive economy, because market capitalizations were completely out of line with what could possibly be sustained in an industry that had virtually no cost to competitive entry. If you understood how profits evolve in a perfectly competitive market with low product differentiation, you understood that profits would not accrue to the majority of those companies even if the economy and the internet itself grew exponentially.
In the current situation, the assumption that the credit crisis is behind us is completely out of line with what possibly could result from the marriage of deep employment losses and an onerous reset schedule on mortgages that have extremely high loan-to-value ratios. A major second wave of mortgage losses isn't a question of whether the economy will post a positive GDP print this quarter or next. Rather, it is a structural feature of the debt market that is baked into the cake because of how the mortgages were designed and issued in the first place.