Animalsseemtohavethesensetoeatwhentheyarehungryandtheydonoteatmorethantheirbodiesneed. Ithasbeenshownthatratswill, whengivenachoiceoveraperiodoftime, preferwaterwithvitaminstowaterwithoutvitaminseventhereisnodifferenceintasteorsmellbetweenthetwowaterbottles. Whenafragrantflavor (香味) wasaddedtothevitamin-enrichedwater, theratsdidseemtodevelopatasteforitandkeptdrinkingit, evenafterthevitaminswereswitchedtotheclearwater. Intime, however, theybrokethehabitandwentbacktowherethenecessaryvitaminswere.
Inaclassicexperiment, babiesof 6 to 12 monthsoldwereplacedinacafeteriafeedingarrangement, withawideselectionofbabyfoodbeforethem. Theyweregivenwhatevertheypointedtoorappearedinterestedin. Wearetoldthatatfirsttheyshowedsomeunusualeatingpatterns, butoveraperiodoftimetheymanagedtoselectwell-balanceddiet.
So, inselectingfood, ratsandbabiesdoseemtoknowandactonwhat’sbestforthem. Apparently, thereisakindof “bodywisdom”, whichhumanssoonlose. Mostofusdonoteataswiselyaswecould. Manyofourfoodpreferencesareculturallydeterminedandinfluencedbylong-establishedhabits. Somepeopleeatfoxes, dogsandblackbirds, whileweeatcowsandpigs. Sowhatpeopleeatandhowmuchtheyeatseemstobegreatlyinfluencedbywhatisgoingonaroundthem.
67. Asfarastheireatinghabitsareconcerned, babiesandratsaresimilarinthatboth ________.
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