Of course science doesn't deal with untestable hypotheses, by definition.
Should evidence appear to suggest that it irrefutably did happen, then science would deal with that.
At least medical science could deal with it, that's the point.
The natural sciences deal with matter.
The problem is that by nature science does not deal well with fraud.
"I am a scientist, and science does not deal in absolute certainties," said Spock.
Hard thinking is indeed required because the kind of information which science is dealing with and seeking to extend is quite literally mind-boggling.
There are many mysteries science has not dealt with, perhaps never will.
Others consider science and religious faith to deal with fundamentally different aspects of life.
-The issue of human experimentation generally comes down to a basic fact: When science deals directly with humans, you have to study humans - eventually.