In principle, highly flexible market participants have a higher degree of likelihood to walk away consistently profiting than those who hold on to a rigid belief for too long.It is critical to accept that certain edges work for some time and then vanish. With Bitcoin's rapid change and progress, a frequent change of mind is necessary.We find that transactional volume-based supply and demand zones do work very well for Bitcoin.However, even more important than knowing what works is knowing what doesn’t work. We follow the principle of “never assume."