I have heard so much debate as to whether or not flash light tests are valid.
Some say that they are not fool proof, but can be a possible indication of paranormal communication.
I do have my theories on this, and I think like anyone it depends on your personal experiences and how scientifically you base your studies or investigations.
Does anyone think this is a reliable means of proving communication in the paranormal sense? If so, do you believe that if it is backed up with other evidence it gives further credence to your findings?