As I understand it, the statement of the horizon problem assumes that the uniformity of the CBR measured at opposite directions in the sky needs a mechanism to create this uniformity. I also understand that many cosmologists do not share this assumption. The purpose of this thread is to seek informed responses to the following three questions: Q1. Have any completed astronomical surveys of dark matter provided any clear evidence showing whether or not dark matter is approximately as uniform in its distribution towards opposite directions of the sky as is the CBR? Q2. If not, is it possible in principle that dark matter astronomy could show that dark matter is or is not approximately similar in its distribution towards opposite directions of the sky as compared with the CBR? Q3. Is the following reasoning cosmologically OK? I have the idea that if dark matter astronomy did show that dark matter is approximately similar with the CBR with respect to a high uniformity of mass/energy distribution towards opposite directions of the sky, then this would imply that inflation was unnecessary to solve the horizon problem. My reasoning is that if the distribution of dark matter is approximately uniform, then since inflation could not have produced such an effect, there is no reason to suppose it is necessary to produce the uniformity of the CBR distribution.