In the real world, we rarely encounter a situation that can be completely modeled with an analytical (rational) model, so the correct answer to the model cannot purport to be the definitively correct answer to the real world situation.

FORBES: Meeting the Big Data challenge: DON'T be objective

If you focus on mastering whatever equipment you have at your disposal, then you'll be better prepared for whatever news situation you encounter.

CNN: photojournalists share their tricks

Besides being keen to press ahead with the Iraqi elections, Mr Bush is clearly concerned at how the situation in Iraq may affect his own encounter with the voters, in November.

ECONOMIST: Security first, sewers later | The