The null hypothesis as the base hypothesis for statistics. Usually along the lines of "there is no correlation" or "this does nothing" or sometimes in the medical community "about the same as conventional treatment".
The default hypothesis serves a similar role in philosophy. As a debate ending with both sides claiming the other need produce evidence is unsatisfactory; some base is required. Sometimes, a hardwired default is available to settle it, and sometimes it isn't. It is important to understand what the default hypotheses are, and what they are not. They are defaults. They should be assumed until proven otherwise. However, they are not particularly right. They are, however, essentially hardwired. A successful cultural attempt to change them would not be