Acharya Prashant explains that in the material world, nothing is truly stationary. Everything we perceive as stable is merely a relative observation based on a specific frame of reference. For instance, a fan might appear still to an observer, but it is actually moving at a high speed along with the Earth's rotation. He emphasizes that anything accessible to the senses or the mind is inherently dynamic and constantly changing. True stability is not the opposite of instability; rather, it is a state that transcends the physical and mental realms where movement is the only constant.