I never suggested it was unusable. I said research was flawed.

Just as you can put 30 individuals of similar ages from a similar environment through through the same course environment with the same instructor and have results that the instructor was a dismal failure, merely okay and and outrageous success for only one or 2 of those individual.

These experiements do not say that the technique is a failure it just shows for the majority it is not an outrageous success and there is still room for improvement and they are still on the hunt for better methods. Because how we think is what makes us unique and there is no one formula that can understand every aspect of what makes up an individual. It's what makes us each unique.

Therapy will naturally have results that are merely OK or a dismal failure for most and an outrageous success on occasions. They have less control over age, environment and motivating the individual to do what is asked.

Alex