In 1997, reflecting on the trajectory FC has taken in several countries, including Denmark, the U.S. and Australia, von Tetzchner wrote:In the struggle to keep up to date with an increasing number of published papers, both researchers and practitioners tend to forget history. In order to avoid making the same mistakes over again, the issues and processes underlying the rise and fall of facilitating techniques--as well as other intervention methods--in various countries should have a natural place in research reviews. When an intervention claimed to have exceptional effects disappears, the likely reason is lack of positive results.By 2005, more than 50 controlled studies and blind tests had been conducted, in addition to numerous controlled tests conducted in legal cases. The studies consistently showed "without a doubt" that the messages obtained through facilitated communication were controlled by the facilitators and not their communication partners.