simplex length is one tenth total length
allow center to get a bigger kick (expand p_min and p_max to include the rotated and expanded scope)
never mind; that expanded kick was not what we needed; try demanding that theta have a magnitude between pi/3 and 2pi/3
eek... wrote that wrong
that did not work, either; try making sure that every ix gets chosen at least once
try both hacks
try using gaussian process to predict kick chisq and pick lowest
pick kick from a smaller volume