Nature builds upon the foundations of the past, developing and perfecting certain functions and capabilities over time, discarding those things which have become obsolete or no longer useful for the general evolutionary development. Sri Aurobindo recognises the past basis in his view of future evolutionary potential and thus, while significant enhancements and upgrades are obviously in process, and certain activities that tie development too tightly to a material basis that must be loosened, he does not see a wholesale rejection of the physical body and all its links to the earth. Such a step would represent an abandonment of the evolutionary progress of Nature rather than a confirmation of it.
Sri Aurobindo has identified certain activities as the most likely to be dropped or radically altered in the interest of integrating a new higher power and form of consciousness, and these relate to the most dense physical activities, eating, sleeping and sexual procreation. He can thus foresee changes There are however powers and capabilities that can adapt to a more powerful and subtle action while retaining the physical form. We can speculate that the brain and nervous system, the pranic interchange of breathing, the circulatory system, and the senses of perception and action would be among those retained and enhanced. Even if there is an eventual power of communication of mind directly with mind, the power of voice and speech has its positive benefits and uses, not solely for communicating with those beings who do not possess the mental communication power, but for expression of song, emotion, nuance and inflection that only the voice has the power to deliver. Breathing is an essential part of the earth-life which reinforces the basic unity of all creatures in a oneness that is a basis for understanding and interaction, which we expect the supramental power to reinforce and reorient our actions to align with this oneness.
Sri Aurobindo writes: “The new type, the divine body, must continue the already developed evolutionary form; there must be a continuation from the type Nature has all along been developing, a continuity from the human to the divine body, no breaking away to something unrecognisable but a high sequel to what has already been achieved and in part perfected. The human body has in it parts and instruments that have been sufficiently evolved to serve the divine life; these have to survive in their form, though they must be still further perfected, their limitations of range and use removed, their liability to defect and malady and impairment eliminated, their capacities of cognition and dynamic action carried beyond their present limits.”
Sri Aurobindo, The Mind of Light, The Divine Body, pg. 61