A. N. Whitehead's approach to physical theorizing contrasts with that of mainstream or official physics in being centrally concerned with articulating a background explanation of physical facts and phenomena in general that would take the place of the “ether” of classical physics, a project otherwise unpursued by the science in its modern period. Unlike Einstein's, Whitehead's approach to relativity primarily seeks explanation rather than utility ; also, it avoids the philosophical problems with Einstein's theory alleged by Whitehead and a range (...) of other philosophers. This stops short of a finding as to the comparative worth of Whitehead's alternative basis for quantitative formulations. (shrink)