«For a brain which has evolved to process sensory stimuli, conceiving of empty sets is an extraordinary achievement,» Nieder says. (sciencedaily.com)
If pushed to be more accurate, we can claim, as is often done, that our model set of two is the set containing 0 and 1, where 0 is the null or empty set -LCB--RCB- and 1 is the set containing the null set -LCB--RCB-. (religion-online.org)
«A comparison of the two brain regions showed an initial amazing transformation in the way empty sets are portrayed by neurons,» says Andreas Nieder. (sciencedaily.com)