Arab leaders worry more about making money from the profits they get from oil and gas that they turn the other way when Lebanon is being destroyed right next to them. Their neighbours are being murdered, but they only make calculations for their own benefit.
If the only way you could read an email was to run a mile first, the urge would quickly die. Human beings constantly do subconscious effort/reward calculations. Tapping a screen is the easiest of physical tasks.
I never shot much when I was a kid, but on the spotting scope, understanding the ballistics and the calculations, I'm a ten.
Radiative transfer calculations I can do standing on my head.
Life it is not just a series of calculations and a sum total of statistics, it's about experience, it's about participation, it is something more complex and more interesting than what is obvious.
I think of the brain as a computational device: It has a bunch of little components that perform calculations on some small aspect of the problem, and another part of the brain has to stitch it all together, like a tapestry or a quilt.
The ability to perform basic math calculations is certainly an integral part of playing fundamental poker. But in tournament poker, it's equally important to understand that survival often trumps mathematics in coin flip situations.
There are many different kinds of radioactive waste and each has its own half-life so, just to be on the safe side and to simplify matters, I base my calculations on the worst one and that's plutonium.
Although it's difficult, if not impossible, to put a dollar value on the numerous services nature provides, leaving them out of economic calculations means they are often ignored.