Pascal's Wager is an argument in philosophy which was devised by the seventeenth-century French philosopher, mathematician, and physicist Blaise Pascal (1623–1662). It posits that humans all bet with their lives either that God exists or does not exist.
Given the possibility that God actually does exist and assuming the infinite gain or loss associated with belief in God or with unbelief, a rational person should live as though God exists and seek to believe in God. If God does not actually exist, such a person will have only a finite loss (some pleasures, luxury, etc.).
Historically, Pascal's Wager was groundbreaking because it charted new territory in probability theory, marked the first formal use of decision theory.
After finishing the argument in his Pensées, he wrote, "This is conclusive, and if men are capable of any truth, this is it." That is the only time Pascal ever wrote a sentence like that, for he was one of the most sceptical philosophers who ever wrote.
Suppose someone terribly precious to you lay dying, and the doctor offered to try a new "miracle drug" that he could not guarantee but that seemed to have a 50-50 chance of saving your beloved friend's life. Would it be reasonable to try it, even if it cost a little money? And suppose it were free—wouldn't it be utterly reasonable to try it and unreasonable not to?
Suppose you hear reports that your house is on fire and your children are inside. You do not know whether the reports are true or false. What is the reasonable thing to do—to ignore them or to take the time to run home or at least phone home just in case the reports are true?
Suppose a winning sweepstakes ticket is worth a million dollars, and there are only two tickets left. You know that one of them is the winning ticket, while the other is worth nothing, and you are allowed to buy only one of the two tickets, at random. Would it be a good investment to spend a dollar on the good chance of winning a million?
No reasonable person can be or ever is in doubt in such cases. But deciding whether to believe in God is a case like these, argues Pascal. It is therefore the height of folly not to "bet" on God, even if you have no certainty, no proof, no guarantee that your bet will win.
Atheism is a terrible bet. It gives you no chance of winning the prize.
To understand Pascal's Wager you have to understand the background of the argument. Pascal lived in a time of great scepticism. Medieval philosophy was dead, and medieval theology was being ignored or sneered at by the new intellectuals of the scientific revolution of the seventeenth century. Montaigne, the great sceptical essayist, was the most popular writer of the day. The classic arguments for the existence of God were no longer popularly believed. What could the believer say to the sceptical mind of this age? Suppose such a typical mind lacked both the gift of faith and the confidence in reason to prove God's existence; could there be a third ladder out of the pit of unbelief into the light of belief?
Imagine you are playing a game for two prizes. You wager blue chips to win blue prizes and red chips to win red prizes. The blue chips are your mind, your reason, and the blue prize is the truth about God's existence. The red chips are your will, your desires, and the red prize is heavenly happiness. Everyone wants both prizes, truth and happiness. Now suppose there is no way of calculating how to play the blue chips. Suppose your reason cannot win you the truth. In that case, you can still calculate how to play the red chips. Believe in God not because your reason can prove with certainty that it is true that God exists but because your will seeks happiness, and God is your only chance of attaining happiness eternally.
Pascal says, "Either God is, or he is not. But to which view shall we be inclined? Reason cannot decide this question. [Remember that Pascal's Wager is an argument for sceptics.] Infinite chaos separates us. At the far end of this infinite distance [death] a coin is being spun that will come down heads [God] or tails [no God]. How will you wager?"
The most powerful part of Pascal's argument comes next. It is not his refutation of atheism as a foolish wager (that comes last) but his refutation of agnosticism as impossible. Agnosticism, not-knowing, maintaining a sceptical, uncommitted attitude, seems to be the most reasonable option. The agnostic says, "The right thing is not to wager at all." Pascal replies, "But you must wager. There is no choice. You are already committed [embarked]."
We are not outside observers of life, but participants. We are like ships that need to get home, sailing past a port that has signs on it proclaiming that it is our true home and our true happiness. The ships are our own lives and the signs on the port say "God". The agnostic says he will neither put in at that port (believe) nor turn away from it (disbelieve) but stay anchored a reasonable distance away until the weather clears and he can see better whether this is the true port or a fake (for there are a lot of fakes around).
Why is this attitude unreasonable, even impossible? Because we are moving. The ship of life is moving along the waters of time, and there comes a point of no return, when our fuel runs out, when it is too late. The Wager works because of the fact of death.
Suppose Romeo proposes to Juliet and Juliet says, "Give me some time to make up my mind." Suppose Romeo keeps coming back day after day, and Juliet keeps saying the same thing day after day: "Perhaps tomorrow." In the words of a small, female, red-haired American philosopher, "Tomorrow is always a day away. And there comes a time when there are no more tomorrows. Then "maybe" becomes "no". Romeo will die. Corpses do not marry.
Saying "maybe" and "perhaps tomorrow" cannot continue indefinitely because life does not continue indefinitely. The weather will never clear enough for the agnostic navigator to be sure whether the port is true home or false just by looking at it through binoculars from a distance. He has to take a chance, on this port or some other, or he will never get home.
Once it is decided that we must wager; once it is decided that there are only two options, theism and atheism, not three, theism, atheism, and agnosticism; then the rest of the argument is simple. Atheism is a terrible bet. It gives you no chance of winning the red prize. Pascal states the argument this way:
You have two things to lose: the true and the good; and two things to stake: your reason and your will, your knowledge and your happiness; and your nature has two things to avoid: error and wretchedness. Since you must necessarily choose, your reason is no more affronted by choosing one rather than the other. That is one point cleared up. But your happiness? Let us weigh up the gain and the loss involved in calling heads that God exists. Let us assess the two cases: if you win, you win everything: if you lose, you lose nothing. Do not hesitate then: wager that he does exist.
If God does not exist, it does not matter how you wager, for there is nothing to win after death and nothing to lose after death. But if God does exist, your only chance of winning eternal happiness is to believe, and your only chance of losing it is to refuse to believe. As Pascal says, "I should be much more afraid of being mistaken and then finding out that Christianity is true than of being mistaken in believing it to be true." If you believe too much, you neither win nor lose eternal happiness. But if you believe too little, you risk losing everything.
But is it worth the price? What must be given up to wager that God exists? Whatever it is, it is only finite, and it is most reasonable to wager something finite on the chance of winning an infinite prize. Perhaps you must give up autonomy or illicit pleasures, but you will gain infinite happiness in eternity, and "I tell you that you will gain even in this life "—purpose, peace, hope, joy, the things that put smiles on the lips of martyrs.
Lest we take this argument with less seriousness than Pascal meant it, he concludes: "If my words please you and seem cogent, you must know that they come from a man who went down upon his knees before and after."
To the high-minded objector who refuses to believe for the low motive of saving the eternal skin of his own soul, we may reply that the Wager works quite as well if we change the motive. Let us say we want to give God his due if there is a God. Now if there is a God, justice demands total faith, hope, love, obedience, and worship. If there is a God and we refuse to give him these things, we sin maximally against the truth. But the only chance of doing infinite justice is if God exists and we believe, while the only chance of doing infinite injustice is if God exists and we do not believe. If God does not exist, there is no one there to do infinite justice or infinite injustice to. So the motive of doing justice moves the Wager just as well as the motive of seeking happiness. Pascal used the more selfish motive because we all have that all the time, while only some are motivated by justice, and only some of the time.
Because the whole argument moves on the practical rather than the theoretical level, it is fitting that Pascal next imagines the listener offering the practical objection that he just cannot bring himself to believe. Pascal then answers the objection with stunningly practical psychology, with the suggestion that the prospective convert "act into" his belief if he cannot yet "act out" of it.
If you are unable to believe, it is because of your passions since reason impels you to believe and yet you cannot do so. Concentrate then not on convincing yourself by multiplying proofs of God's existence but by diminishing your passions. You want to find faith, and you do not know the road. You want to be cured of unbelief, and you ask for the remedy: learn from those who were once bound like you and who now wager all they have. . . . They behaved just as if they did believe.
An atheist visited the great rabbi and philosopher Martin Buber and demanded that Buber prove the existence of God to him. Buber refused, and the atheist got up to leave in anger. As he left, Buber called after him, "But can you be sure there is no God?" That atheist wrote, forty years later, "I am still an atheist. But Buber's question has haunted me every day of my life." The Wager has just that haunting power.
Pascal's Wager is the argument for the rationality of belief in God and the irrationality of non-belief in God. In his original writing, the Wager looks like this (excerpts from Pensées, part III, §233):
1."God is, or He is not"
2.A Game is being played... where heads or tails will turn up.
3.According to reason, you can defend neither of the propositions.
4.You must wager. (It's not optional.)
5.Let us weigh the gain and the loss in wagering that God is. Let us estimate these two chances. If you gain, you gain all; if you lose, you lose nothing.
6.Wager, then, without hesitation that He is. (...) There is here an infinity of an infinitely happy life to gain, a chance of gain against a finite number of chances of loss, and what you stake is finite. And so our proposition is of infinite force, when there is the finite to stake in a game where there are equal risks of gain and of loss, and the infinite to gain.
In a more modern wording, the wager can be formulated as this argument:
1.If God exists and one believes in him, then one will gain eternal reward (Heaven).
2.If God exists and one does not believe in him, then one will gain eternal punishment (Hell).
3.If God does not exist and one believes in him, then one does not gain or lose anything.
4.If God does not exist and one doesn't believe in him, then one does not gain or lose anything.
5.There is no way to prove whether or not God exists, so all four options have an equal probability.
6.The above four premises are all the possible options, so one must choose.
7.Therefore from premises 1, 3, 5, and 6, one ought to believe in God, regardless of whether or not he exists.
What this means is the argument that regardless of whether or not God exists, one should believe in God. If the believer turns out to be right, he or she gains everything, but if the believer turns out to be wrong, he or she loses nothing.
As the argument goes, if the nonbeliever turns out to be right, he or she gains nothing, but if the nonbeliever turns out to be wrong, he or she loses everything. The argument is, all else being equal, shouldn't we take belief over non-belief? Even if God's existence is improbable, certainly no one has proven God's existence is impossible, so the logic is that believing in God is always a safe bet.
So, how are you currently wagering your life?
Gurmat Gyan (Knowledge)
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