Moving Physical Therapy Forward

You can listen to Joseph Brence, DPT talk about the need for PTs to have evidence to  support their therapy. This was talked about here in 1994 by Carr and Shepherd. Why should he have to repeat this 18 years later?
http://pttalker.com/2012/09/moving-physical-therapy-forward/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+PtTalker+%28PT+Talker%29
But then we might not get any therapy at all, for those like me who have large areas of dead brain, What will therapists provide as evidence? I remember my OT telling me that studies showed that survivors that didn't have this type of finger movement wouldn't recover finger movement. I still do not have finger movement  but she kept trying and I will eventually prove it can be done.