The light is better over here

A man is looking for his lost keys under the street lamp. His companion tells him that he's probably dropped them near his car. The man replies, "I know, but the light is better over here."

In a company I've worked for, management wanted to measure the contribution of each employee. They made us punch the time-card when we arrive for work and when we leave. They could then add up all the hours and see who logged the most.

The light is better over here.

In the equity market, data clearly show that the market behaves in nonlinear ways. The variables are not necessarily linked in a proportional manner, nor are outputs proportional to inputs. But we continue to apply linear models in predicting the market.

The light is better over here.

(The market example comes from A Mathematician Plays the Market)

(Image source)