During the run up in housing prices during the Cheney administration, even a lowly computer aided drafter such as myself knew the bubble would burst.
When an acquaintance bought a "condo" for over $200,000 in a complex where I had previously rented one of the small 1 bedroom apartments, knew that she paid too damn much.
Since recent history of the Savings and Loan crisis of the 80's, also brought to you by greedy bankers, even a dummy like me figured out the market valuations highly aberrant to historical trends.
Unfortunately and predictably the bankers testified before Congress they had no clue.
If you believe that, you can buy from me a slightly used Ponzi Scheme Arena