without the underlying space each contact, physically, would be self- referential and therefore, not "felt". such as attention can include a wider focus, the individual friction phenomena can be "seen" as part of the greater whole. when seen through attention, this whole is found to be edgeless. this can not be understood because the mind requires boundaries around something in order to focus on it. therefore the mind exists in awareness and can think about itself and in doing so must begin to put limitations on its own existence. this only occurs when attention "uses" thinking to focus(think) on itself.