Felicific calculus Totally Explained

Everything about The Felicific Calculus totally explained

The felicific calculus is an algorithm formulated by utilitarian philosopher Jeremy Bentham for calculating the degree or amount of pleasure that a specific action is likely to cause. Bentham, an ethical hedonist, believed the moral rightness or wrongness of an action to be a function of the amount of pleasure or pain that it produced. Thus, the felicific calculus could, in principle at least, determine the moral status of any considered act. The algorithm is also known as the utility calculus, the hedonistic calculus and the hedonic calculus. Variables, or vectors of the pleasures and pains included in this calculation—which Bentham called "elements" or "dimensions"—were:

Intensity: How strong is the pleasure?
Duration: How long will the pleasure last?
Certainty or Uncertainty: How likely or unlikely is it that the pleasure will occur?
Propinquity or Remoteness, time distance: How soon will the pleasure occur?
Fecundity: The probability that the action will be followed by sensations of the same kind.
Purity: The probability it won't be followed by sensations of the opposite kind.

To these six, which consider the pleasures and pains within the life of a person, Bentham added a seventh element:
ť 7. Extent: How many people will be affected?

Bentham's instructions

Begin with any one person of those whose interests seem most immediately to be affected by it: and take an account,

Of the value of each distinguishable pleasure which appears to be produced by it in the first instance.
Of the value of each pain which appears to be produced by it in the first instance.
Of the value of each pleasure which appears to be produced by it after the first. This constitutes the fecundity of the first pleasure and the impurity of the first pain.
Of the value of each pain which appears to be produced by it after the first. This constitutes the fecundity of the first pain, and the impurity of the first pleasure.

Sum up all the values of all the pleasures on the one side, and those of all the pains on the other. The balance, if it be on the side of pleasure, will give the good tendency of the act upon the whole, with respect to the interests of that individual person; if on the side of pain, the bad tendency of it upon the whole.

Take an account of the number of persons whose interests appear to be concerned; and repeat the above process with respect to each. Sum up the numbers expressive of the degrees of good tendency, which the act has, with respect to each individual, in regard to whom the tendency of it's good upon the whole. Do this again with respect to each individual, in regard to whom the tendency of it's bad upon the whole. Take the balance which if on the side of pleasure, will give the general good tendency of the act, with respect to the total number or community of individuals concerned; if on the side of pain, the general evil tendency, with respect to the same community.
To make his proposal easier to remember, Bentham devised what he called a "mnemonic doggerel" (also referred to as "memoriter verses"), which synthesized "the whole fabric of morals and legislation":

Intense, long, certain, speedy, fruitful, pure—
Such marks in pleasures and in pains endure.
Such pleasures seek if private be thy end:
If it be public, wide let them extend
Such pains avoid, whichever be thy view:
If pains must come, let them extend to few.

Hedons and dolors

The units of measurements used in the felicific calculus may be termed hedons and dolors. They may be regarded the utilitarian posends and negends.

Example usage

Let us imagine you're a doctor driving to a patient, a young mother who is about to give birth. It looks like she'll need a caesarian section. It is late at night and you come across a car accident on the country road you're travelling on. Two cars are involved in the accident and both drivers are unconscious and have visible injuries. One of the men is the father of the child you're going to deliver, and the other man is very old. You don't know the extent of their injuries but in your opinion, without immediate medical help, one or both may die. You as a Utilitarian are now faced with one of three possible solutions:

You help the young mother who's about to give birth.

You help the young woman's husband.

You help the old man. The outcome of felicific calculus would suggest:

Attending to the mother first is your primary concern as the doctor. The death of both mother and child is almost a certainty if you don't act now, whereas the death of the men is uncertain. Furthermore, the pain of the mother is clearly greater than that of the men at this time. There is a greater richness and purity in saving the life of a young child who has, in all probability, a long happy life ahead. Therefore the extent and duration of the utility created by these two people is a clear likelihood.

Attending to the young husband is the next priority. The pleasures of a new family—its intensity, duration, extent, richness, and purity—are all clear probabilities. If, as the doctor, you attend him first his wife and child would in all probability die. The man would then experience pain. The pain experienced by the widowed husband is likely to outstrip any pleasure to be gained from continued life without his loved ones.

Attending to the old man is the last priority. The duration and certainty of his future pleasure are questionable owing to his age—he has all but lived his life. This is sometimes known as the 'good innings' argument, according to which the older you're the less claim you've to life. Certainly, the doctor shouldn't be limited to the three choices, though the whole purpose of the exercise rests on it being a closed universe. To maximize the felicific calculus, he should try to secure external help by calling another doctor to help the mother, and by asking people nearby and the emergency services to deal with the accident.
Some critics argue that the happiness of different people is incommensurable, and thus a felicific calculus is impossible in practice.

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