Home > Topic > the probability

the probability  QUOTES

7 " In theory, the risk of business failure can be reduced to a number, the probability of failure multiplied by the cost of failure. Sure, this turns out to be a subjective analysis, but in the process your own attitudes toward financial risk and reward are revealed.By contrast, personal risk usually defies quantification. It's a matter of values and priorities, an expression of who you are. " Playing it safe" may simply mean you do not weigh heavily the compromises inherent in the status quo. The financial rewards of the moment may fully compensate you for the loss of time and fulfillment. Or maybe you just don't think about it. On the other hand, if time and satisfaction are precious, truly priceless, you will find the cost of business failure, so long as it does not put in peril the well-being of you or your family, pales in comparison with the personal risks of no trying to live the life you want today.Considering personal risk forces us to define personal success. We may well discover that the business failure we avoid and the business success we strive for do not lead us to personal success at all. Most of us have inherited notions of " success" from someone else or have arrived at these notions by facing a seemingly endless line of hurdles extending from grade school through college and into our careers. We constantly judge ourselves against criteria that others have set and rank ourselves against others in their game. Personal goals, on the other hand, leave us on our own, without this habit of useless measurement and comparison.Only the Whole Life Plan leads to personal success. It has the greatest chance of providing satisfaction and contentment that one can take to the grave, tomorrow. In the Deferred Life Plan there will always be another prize to covet, another distraction, a new hunger to sate. You will forever come up short. "

9 " In the statistical gargon used in psychology, p refers to the probability that the difference you see between two groups (of introverts and extroverts, say, or males and females) could have occurred by chance. As a general rule, psychologists report a difference between two groups as 'significant' if the probability that it could have occurred by chance is 1 in 20, or less. The possibility of getting significant results by chance is a problem in any area of research, but it's particularly acute for sex differences research. Supppose, for example, you're a neuroscientist interested in what parts of the brain are involved in mind reading. You get fifteen participants into a scanner and ask them to guess the emotion of people in photographs. Since you have both males and females in your group, you rin a quick check to ensure that the two groups' brains respond in the same way. They do. What do you do next? Most likely, you publish your results without mentioning gender at all in your report (except to note the number of male and female participants). What you don't do is publish your findings with the title " No Sex Differences in Neural Circuitry Involved in Understanding Others' Minds." This is perfectly reasonable. After all, you weren't looking for gender difference and there were only small numbers of each sex in your study. But remember that even if males and females, overall, respond the same way on a task, five percent of studies investigating this question will throw up a " significant" difference between the sexes by chance. As Hines has explained, sex is " easily assessed, routinely evaluated, and not always reported. Because it is more interesting to find a difference than to find no difference, the 19 failures to observe a difference between men and women go unreported, whereas the 1 in 20 finding of a difference is likely to be published." This contributes to the so-called file-drawer phenomenon, whereby studies that do find sex differences get published, but those that don't languish unpublished and unseen in a researcher's file drawer. "

10 " Statistically, the probability of any one of us being here is so small that you'd think the mere fact of existing would keep us all in a contented dazzlement of surprise. We are alive against the stupendous odds of genetics, infinitely outnumbered by all the alternates who might, except for luck, be in our places.
Even more astounding is our statistical improbability in physical terms. The normal, predictable state of matter throughout the universe is randomness, a relaxed sort of equilibrium, with atoms and their particles scattered around in an amorphous muddle. We, in brilliant contrast, are completely organized structures, squirming with information at every covalent bond. We make our living by catching electrons at the moment of their excitement by solar photons, swiping the energy released at the instant of each jump and storing it up in intricate loops fro ourselves. We violate probability, by our nature. To be able to do this systematically, and in such wild varieties of form, from viruses to whales, is extremely unlikely; to have sustained the effort successfully for the several billion years of our existence, without drifting back into randomness, was nearly a mathematical impossibility.
Add to this the biological improbability that makes each member of our own species unique. Everyone is one in 3 billion at the moment, which describes the odds. Each of us is a self-contained, free-standing individual, labeled by specific protein configurations at the surfaces of cells, identifiable by whorls of fingertip skin, maybe even by special medleys of fragrance. You'd think we'd never stop dancing. "

Lewis Thomas , The Lives of a Cell: Notes of a Biology Watcher