British anthropologist uye evolutionary psychologist Robin Dunbar anotaura pamusoro pekuedza kwemasayendisiti kubva kunyika dzakasiyana-siyana kuzarura chakavanzika cherudo.
Zvinoitika kuti sainzi inoziva zvakawanda: ndeupi wedu anonyanya kutaridzika, kuti tinonyengedza sei, watinoda kuita naye nyaya, nei tichiwira chirauro chevanyengeri vecyber. Zvimwe zvidzidzo zvinosimbisa izvo zvakazivikanwa kwenguva refu (mabhuru marefu anozivikanwa zvikuru nevakadzi), mhedziso dzevamwe hadzitarisirwi (kutaurirana nevakadzi kunoderedza kugona kwekuziva kwevarume). Zvisinei, munyori anobvuma, pasinei nokuti sainzi inoparadzanisa sei hukama hwepabonde, hapana munhu anogona kubvisa "chemistry yerudo".
Sinbad, 288 p.