Monday, June 1, 2009

Luck


Luck (also called fortuity) is a chance happening, or that which happens beyond a person's control. Luck can be good or bad (as in; Good fortune or misfortune).

Luck as lack of control
Luck refers to that which happens to a person beyond that person's control. This view incorporates phenomena that are chance happenings, a person's place of birth for example, but where there is no uncertainty involved, or where the uncertainty is irrelevant. Within this framework one can differentiate between three different types of luck:

Constitutional luck, that is, luck with factors that cannot be changed. Place of birth and genetic constitution are typical examples.
Circumstantial luck - with factors that are haphazardly brought on. Accidents and epidemics are typical examples.
Ignorance luck, that is, luck with factors one does not know about. Examples can be identified only in hindsight.

Luck as fallacy
Another view holds that "luck is probability taken personally." A rationalist approach to luck includes the application of the rules of probability, and an avoidance of unscientific beliefs. The rationalist feels the belief in luck is a result of poor reasoning or wishful thinking. To a rationalist, a believer in luck commits the "post hoc, ergo propter hoc" logical fallacy, which argues that because two events are connected sequentially, they are connected causally as well:

A happens (luck-attracting event or action) and then B happens;
Therefore, A caused B.

In this particular perspective, probability is only affected by confirmed causal connections. A brick falling on a person walking below, therefore, is not a function of that person's luck, but is instead the result of a collection of understood (or explainable) occurrences. Statistically, every person walking near the building was just as likely to have the brick fall on them.

The gambler's fallacy and inverse gambler's fallacy both explain some reasoning problems in common beliefs in luck. They involve denying the unpredictability of random events: "I haven't rolled a seven all week, so I'll definitely roll one tonight".

Luck is merely an expression noting an extended period of noted outcomes, completely consistent with random walk probability theory. Wishing one "good luck" will not cause such an extended period, but it expresses positive feelings toward the one -- not necessarily wholly undesirable.


Reference: wikipedia
Thanks to http://saligia.deviantart.com/ for the image.

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