Point your forefinger back at yourself and look for the “looker,” or the self. We might then notice a peculiar absence, obvious all along but somehow overlooked.
(Douglas Harding has developed many such experiments that directly point to an emptiness of self. You can find these at headless.org)
Put another way, we might register the absence of a boundary between “self” and “world.” As Douglas says, “I was nowhere around.” “I” seems to have dissolved into the world, like a sugar crystal into water.
In essence, headlessness seems to question the powerful assumption that “I-am-the-body.” The pointing experiment shows up this assumption for what it is quite dramatically and in a profoundly non-verbal fashion.
It seems that the Void can become evident in ordinary daily life.