Adults, by contrast, are more likely to rely on experience or gut feelings than rational calculation.

These things were not a matter of intellectual assessment and rational calculation; they sprang from events in the nursery.

The big winners are usually people who, based on rational calculations, shouldn't have bet their time, money and ideas.

Any rational economic calculation must conclude the world is getting the bargain of the century.

Yet this model assumes that we perceive risk consistently, as a rational calculation of odds.

What has that got to do with any rational calculation of comparative advantage?

You must make a rational calculation of what is in your best interest - short-term savings or long-term shopping opportunities.

But then the whole operation itself was in defiance of any rational calculation of the odds.

By any rational political calculation, the timing of this move could not have been worse.

No analysis can do justice to them which attributes their actions simply to rational calculation.