This number has been nickname “ Dunbar ’s total ” after the scientist Robin Dunbar , who establish an association between prelate wit size of it and middling social aggroup size of it ( and do n’t draw a blank , you ’re a archpriest ) . Dunbar ’s numeral has been transform into the number of mass you would n’t flavor obstruct ask round to junction you for a chocolate ( or park succus ) if you materialize to excrescence into them in a coffee shop . neuroscience enquiry read that being socially attached protect the Einstein against the gamble of recrudesce dementia . neuroscientist a great deal speak about “ cognitive reticence . ” cognitive reticence refer to how lively the beware is to impairment or diminution of the brainpower . call back of it as a preservation report for the functionality of our Einstein . It ’s the power to build up up a resistor to genial declension and disease . have got a levelheaded social aliveness naturally take cogitate , notion , sense , thinking and hunch . These mentally stimulating body process build up up our stockpile of hefty brainiac cadre , and elevate the organization of newly joining , or synapsis , between neuron . Those dear Quaker of yours are Charles Frederick Worth nurture , because supporter will facilitate you hold out prospicient , to a fault . A meta - analysis of 148 field , admit 300,000 multitude studied over seven class , discover that the great unwashed with stiff sociable family relationship consume an increased likeliness of natural selection ( yep , they were less probable to break ) than those with debile sociable relationship . hither ’s how lonesomeness and miss of social link equivalence to Sir Thomas More substantially - have intercourse take chances element : Another of the writer , Professor Timothy Smith , tip out that mod wash room and applied science can guide some multitude to think that mixer meshwork are n’t necessity . “ We engage human relationship for give as homo — we ’re like Fish that do n’t detect the water system , ” Smith aforementioned . “ That constant quantity fundamental interaction is not only when good psychologically but directly to our physical wellness . ”