You know, I’m not even sure how to answer this post. I will try to formulate an answer to your initial questions over the next little while, but could you explain how you see faith and reason to be incompatible with each other? Preferably with a concrete example?
OK. Let’s see a few examples.
We all know about the power of gravity. If someone would decide to jump off the Empire State Building, he would be very certain that the jump is fatal. There is no faith needed to come to that conclusion. If someone would belive that he can survive the jump without a scratch, that would need tremendous faith (even though it did happen, that someone jumped out of an airplane, his parachute failed, and he still survived).
Now, in reality, things are not so simple and clear-cut.
Suppose we have a new medication, which was developed to cure a certain illness. When the clinical trials are organized, they form two groups, the test group and the control group. The test group is given the new medication, the control group is given some placebo. The doctors, who give out the medication are not privy to the information, who gets which kind - this is called a double blind setup. After a while, the groups are evaluated, and the results are placed into a correlation matrix. The matrix has 4 slots. In the first one we place the number which is the number of recuperations for the test group. The second slot will contain the number non-recuperations in the test group. The third one will contain the number of recuperation in the control group. Finally, the fourth one will contain the number of non-recuperations in the control group.
From these numbers we can calculate the **correlation **between the medication and the recuperations. In an extreme case, it can happen that everyone will recuperate if they received the medication, and no one will recuperate in the control group. That would indicate full
causation, not just a correlation. Conversely, it might happen that everyone dies in the test group and no one dies in the control group. That would also indicate a causation - the medication is not ineffective, but very harmful.
Usually, the correlation is not this kind. If there is a positive correlation, we say that the medication is somewhat beneficial. If the correlation is negative, we discover that the medication is somewhat harmful. The stronger the correlation, the higher the confidence, that the medication is beneficial. Suppose the correlation is around 70-80%. This would indicate a good
reason to decide that the medication is beneficial. Suppose, the correlation is around 10-20%. It would
not give a good reason to trust this medication. If the correlation is very close to zero, then there is no reason to trust the medication.
If someone would nevertheless trust the medication, it would be purely on faith.
Now, a different case: the alleged efficacy of prayer. The first problem is that there is no way to set up a proper control group. You could never ensure that only the members of the test group would be prayed for, but not the people in the control group. Therefore the correlation matrix is already dubious. Yet, when such experiments were actually conducted, there was no discernable correlation between the prayer and the recuperations. None, whatsoever.
So to trust prayer as a means to help sick people is unreasonable, since it is not supported by data.
Summary: if an assumption is supported by data, if the experiments for that data can be repeated, and the result is similar, we call that rational or reasonable assumption. If there is no supporting data (worse if the data actually contradicts the assumption), or the correlation is very weak, we say that the assumption is accepted on faith.
The line is usually drawn at 75-80% where we can say that the data sufficiently supports the hypothesis. If the correlation is under 20%, we say that the data does not support the hypothesis. Inbetween we say that the data is inconlusive. If, however, the data flatly contradicts the hypothesis, and someone still accepts the hypothesis, that is not just “faith”, it is “blind faith”.
I feel like this conversation is already going to more fruitful places than most have, and I want to thank you for your thoughtfulness and civility.
Peace
Thank you very much.