Essential to FF is the process of being aware of our own and others attention. For people who grasp this, FF is instantly possible.

I believe this ability is innate. In humans and animals and between species. I say this because I see the immediacy with which some people and all animals seem to display this. However, I think this
instinctual detection of another’s awareness can at times be distracted. Training therefore comprises allowing our innate sensitivity to inform our interaction unhindered.

Peri Mackintosh