Experiment COLD . ... Statement of the Problem . The observer must resign himself to the fact that it is senseless to attempt to actually attain the potential sensitivity of modern radio telescopes without ever using any a priori information about the object being studied and extremely careful study of the properties of all kinds of additional sources of noise. ... The problem in Experiment Cold were formulated in just this way. ... A List of the Problems Studied in the Deep-Survey Cycles . ...