"Eyewitness testimonies are used in the courtroom. However, they cannot be used as scientific evidence."

Negative, Sir. Qualitative analysis is just as scientific as quantative science. Anecdotal evidence is necessary in medical and in mental health. Measuring happiness, pain, and many other attributes that stem from a consciousness perspective requires a sensitivity and awareness beyond the tangible that is solid real. I dare say, every museum of art is based on this measurment. Yes, there is bias. My son's art that got elevated to refrigerator status does not denote museum worthiness, but in that there is a measure that psychoanalyst might determine systems of health.

Dismissing testimony in this endeavor is a mistake. There is a reason UFO lore refers to the OZ Effect. We are on a paradigm shift from black and white to full spectrum, HD technicolor. Our language is a measure. Even you like to use analogies and metaphors. Don't throw out baby, water, soap, and bucket in the search for something more tangible.