  Recent indications of a neutrino mass raise the possibility that the dark
matter may be hot, which would be a severe challenge for structure formation
theory. We argue that generic defect theories fare very well in hot dark matter
cosmologies, and also work in the presence of curvature or a cosmological
constant. If this model is correct, then the MAP and PLANCK missions will not
measure what people expect them to (oscillations); rather, they will measure a
broad hump.
