Prior to the internet, NOTHING could be verified by the clients. Not comp photos, not property condition, not GLA, not an assertion that there was no external obsolescence, NOTHING. The clients took our word that the GLA was accurate, that the condition was accurate, that the comps weren't completely made up. Add to that there was no 1004MC (crappiness of the form aside) which meant that most appraisers weren't even doing a market analysis at all. And I can attest factually that there were a LOT of appraisers who took advantage of that information asymmetry.