That excitement is perceived by the patients and causes referrals. Now his practice is beginning to grow and he assumes that it is because his new technique is getting better results. Here's the principle. Patients who are excited about chiropractic are the ones who refer. Patients do not get excited about results.
People expect results.
Sixty years ago it was a little different. That was part of the reason for the growth of chiropractic. People went to chiropractors after trying everything else and got well. Today people go to the chiropractor as a first choice and they go expecting to get results. They do not get enthusiastic about results, especially if those results involve back aches and stiff necks.