Eyewitness testimony isn’t evidence, eh? Before I get too invested in this, I want to know what you do consider to be evidence. Suppose that, hypothetically, I run a study where I recruit 1000 people off the street. I tell them that at some point over the next 10 days, I’m going to pray for them to experience peace. For each person, I roll a 10 sided die to choose which day to pray on, do so, and record the result. Then at the end of the 10 days, I bring them all back and ask them to indicate on which day they felt the most peace. ~600 of them say the same day that I rolled for them, ~150 of them are one day off, and ~100 can’t give an answer. If this were to happen (solely hypothetical, ignoring any arguments about whether God would play along for a study,) would that count as evidence?
Yes that would count as evidence but only if you modified your experiment slightly:
- Don’t tell anyone that you will pray for them.
- Instead of personally praying for each person, give the list of participant names to someone you trust.
- This person can then pray for a subset of the people listed on random days, recording the person they prayed for and the day.
- You conduct interviews with the people as you suggested.
- After you record the results of the interviews, you then look at the data from the person who prayed and see where things matched up. You can then observe if there are any statistically significant differences between those who were prayed for and those who were not
The reason this counts as evidence is because it’s not eyewitness testimony, it’s a controlled experiment which should be reproducible by anyone. By itself it doesn’t prove anything but it would help to start building a body of evidence that prayer can work, or not depending on your results.
So if it doesn’t meet the standards of a double blind study, it’s worthless as evidence? What about case studies?
I get that double blind studies are superior because they combat bias, but sometimes double blind studies aren’t what’s been done. Other types of studies aren’t invalid, you just have to take them with salt and consider alternative explanations - just as you do with a double blind study.
Case studies are similar in my mind to anecdotes or eyewitness testimony, an interesting starting point or indication that something might be worth digging into but not really evidence.
And yeah I suggested a double blind study because it has the most value for providing potential evidence although even that is no guarantee depending on the experiment design. It’d definitely be a good start though at the very least. You could do a non blind study but then the fact that it’s non blind will be the first thing to come up and cast doubt on the results. If you want to provide solid evidence I don’t think you would want to settle for less than that if you can avoid it.
FWIW I think there have already been studies done on prayer but they don’t seem to be conclusive from what I could tell at least but hey, I’m not a scientist. You just asked what I’d consider evidence so hopefully this has helped answer that somewhat. Even with a double blind study though I think you would have some work ahead of you but you’d definitely have my interest!