How can the training courses be so inexpensive, and is it really serious?
It is not because something is expensive that it is necessarily serious. The method of Phosphenic Mixing applied to education, is without a doubt the cheapest educational method available, as it only requires a lamp; yet it is by far the most efficient. The price of the training courses is worked out according to several criteria: the number of persons involved, the cost of the venue, the functioning costs. After following the basic level and advanced level courses, the student will only pay a contributory price (participation in functioning costs). And as for the continuing training courses, they are free.