If we are going to start discussing statistics, remember that a certain European authority unilaterally implemented a new Colour Vision test (and still uses it, despite it not being approved by EASA), from a very small sample study of persons and without any formal clinical testing or safety studies.
Having discussed it with persons involved in full-time medical research studies I feel assured that a sample of the size used would not be acceptable for mainstream medicine and the thought of implementing a medical procedure that was not first subjected to any form of clinical testing or safety risk assessment is absurd.
Then again, there is always the 'God complex'.
