ITH_DASH_DASHREPLACE_WITH_DASH_DASHREPLACE_WITH_DASH_DASHREPLACE_WITH_DASH_DASHREPLACE_WITH_DASH_DASHREPLACE_WITH_DASH_DASHREPLACE_WITH_DASH_DASHREPLACE_WITH_DASH_DASHREPLACE_WITH_DASH_DASHREPLACE_WITH_DASH_DASH-
% THINGS TO NOTE:
%
% o) the expected posterior is always a point-mass mixture ("spike-n-slab")
% with the atomic component at 0 having probability mass = (n-k)/n
%
% o) so the question becomes what should the *continuous* component of this
% mixture look like?  For example, does *it* look l