Given the outrageous nature of some miracles they are not very likely to happen. For example the probability of a statue of the Virgin Mary weeping real tears would have to be greater than it occurring for other reasons. As Ockham said, entities should not be multiplied beyond necessity unless there is good reason for doing so. One defect of science is that it does not take into account objects which do not exist. There is a possibility of proving the existence of psi phenomena, but it will always be critically scepticised.
Phrenology says a person's behaviour is determined by the size of their brain.
We can't change our brain's way of thinking except with physical force. Anything that cannot be scientifically proven cannot be believed. Science is advancing every day, so one day a gypsy could look into a crystal ball and see your future. Given that the event has been neither proven nor disproven it is difficult to let the matter drop. The main danger of scepticism is eternal damnation.