Nevertheless, the average feature entropy of the inventories produced (see curve M3 in Figure 3) are more close to that of the real ones now (for quantitative comparison see Table 2).
it turns out that the groups of consonants that largely co-occur in the languages of a linguistic generation are actually driven by the principle of feature economy (see (Clements, 2008;Mukherjee et al.2007a) for details).