Beth
Philosopher
- Joined
- Dec 6, 2004
- Messages
- 5,598
This is mostly correct, but you have misunderstood one detail. You are correct that the null hypothesis is accepted without evidence rejected with strong evidence supporting the alternative. But there is no requirement about which statement will be the null and which the alternative. Which hypothesis is the null and which the alternative is at the discretion of the researcher conducting the test.One side is saying that something exists, and the other is the null hypothesis. The whole point of a null hypothesis is that until you disprove it, you don't have anything to discuss (for reference, check out any statistics class). The null hypothesis is the default position--until evidence comes which actually disproves it, you accept it.
To be statistically valid, the null hypothesis must contain an equality. That is the crucial requirement. It is far simplier to analyse a test when the null contains the assumption of 'no discernable difference', which is why they are almost always set up that way. However, it is possible to devise and test nulls which are set up in the opposite way. The equality, which is required to be in the domain of the null hypothesis, can be reworked to allow for this. Flipping the tradiational set up for the null and alternative hypotheses is not a simple analysis because the hypotheses and the analysis of it are more complex, but it is possible and in some cases, worth the extra trouble.* An assessment of the prior probability of the hypotheses being considered is often used to determine which will be the null.
My point is that it is perfectly reasonable for a person who already believes in god to set the hypothesis that 'god exists' as the null and require strong evidence that their null hypothesis is incorrect before accepting the alternative 'god does not exist'.
Which means that the two competing hypotheses are NOT on equal footing. Which means that until evidence FOR gods is presented (not just "this looks designed!" but actual evidence), a truly rational person would accept the null hypothesis. They would be an atheist.
I disagree. To claim that religious beliefs are irrational by definition seems like a double standard to me because it's basing a conclusion of rational/irrational without examining the reasoning that led to a particular conclusion (belief in god).
A person can rationally choose to be a theist. They might base their belief on a completely rational trust in what authority figures (usually mom and dad) have told them and their own experiences which match what those authority figures have told them about such experiences. They simply trust that the explanations they have been given for those experiences are correct. It is perfectly rational to do this with all sorts of other beliefs - for example, most people believe what their doctor tells them. They rarely go to the trouble of getting a second opinion or researching the diagnosis and treatment of minor ailments. That's not considered irrational behavior.
Another rational reason to choose to be a theist is in order to belong to a particular community of believers. In particular, when the community may choose to excommunicate or otherwise exclude an individual if they do not believe, a rational choice for some is to believe so that they can remain a part of the community.
These rational reasons for belief do not touch upon the issue of whether or not the belief is true, but the point of this discussion has been that we can't actually know for certain whether or not a belief about god is true or false. An individual can only conclude one way or the other based on the evidence available to him or her. Not every person will consider the same evidence as having the same weight, so it's possible and reasonable to expect different people to arrive at different conclusions even given the same evidence.
* For a detailed statistical description of this: "Testing Statistical Hypotheses of Equivalence" by Stefan Wellek.