Data-mining and non-photorealism are closely related, particularly when it comes to algorithms that abstract data according to variable criteria. They also are disciplines struggling to function under the influence and expectations of the human perception system and its sum-of-all-parts owner, the human. The beautiful mountainous landscape above is visualization of optimism bias as witnessed in earning estimates. The yellow lines represent well-informed daily projections of fairly short-term forecasts. The blue dots represent the arrival of reality.
Head over to the Frontal Cortex by Jonah Lehrer for more insight, including why wall street should be hiring the chronically depressed.