Top panel: distribution of the number of cosmological neighbors for the FR 0s; the inset shows the same distribution with a smaller bin size, i.e., 1 instead of 5, to focus on the region of low . In green we show the distribution for the sample of mock galaxies (see text for details) scaled by a factor 104/287, i.e., normalized to the same area as the FR 0s histogram; the first bin contains 211 MOCKs. The inset is a zoom for low for both FR 0s and MOCKs; the first bin contains 85 MOCKs. Bottom panel: comparison of the distributions for FR Is (blue) and MOCKs (green).