:Your point is ill taken. Neither source is limited in the manner you claim. There is no mispresentation. Randi states of the Science of Creative Intelligence, which is the foundation of the theory behind TM: 

 ::Study of the siddhis is an aspect of the Maharishi's “Science of Creative Intelligence,” which has no scientific characteristics at all. Though wide claims have been made for the effect of TM on the world, none of the claims have stood examination. One of the Maharishi's attractive analogies——in which he equates the solar system with the structure of the atom——is not only crackpot science; it is very bad crackpot science. 

 :Sagan says specifically: 

 ::Perhaps the most successful recent global pseudoscience—by many criteria, already a religion—is the Hindu doctrine of transcendental meditation (TM).