Remarks on the nature of gamma-ray bursts

We first recall that in radio astronomy, isotropy and source counts steeper than the Euclidean value of -1.5 provided early evidence for the cosmological nature of radio sources. We discuss briefly whether anything can be wrong with the evidence for isotropy and a nonuniform distribution of GRBs. We identify the selection of cosmic GRBs among recorded bursts and their isotropy as the weaker part of the evidence. We suggest a way to relate the various V/V(max) values to each other. We point out that the strong concentration of small V/V(max) values fits well with a uniform distribution of sources out to a redshift of about 2, but note that sources observed at these redshifts generally exhibit evolution, i.e., a nonuniform space distribution.