This whole facilitaing thing is reminiscent of our childhood game of playing with a ouija board (something I adamantly would oppose now, because in retrospect, I believe it smacks of tumah).
Supposedly however, one got messages from “beyond” that were spelled out by holding onto a planchette that “moved” from letter to letter. Just as I believe those movements were either deliberate or from one’s own unconscious mind, I believe the same thing about facilitating someone to write an answer when he or she is autistic or otherwise unable to communicate verbally.