MANY children learn early: To pick an apple beyond their reach, they climb onto the shoulders of a playmate. Within the field of medicine, something similar has taken place.
लहान मुले, आंबे तोडताना एखादा आंबा हाती लागत नसेल तर मित्राच्या खांद्यावर चढून हात पुरवण्याचा प्रयत्न करतात.