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OnedayinearlyJuneyourDadcomestoyouandmakesthedreadeddeclaration, Ivegotalittlejobforyoutoday.Andinthatonefatefulsentence,youknowthatsummervacationisalreadyover.Heshowsyouareallyhugepileofoldtiresandtellsyoutostacktheminthebackoftheoldpickuptruck.Youbeginliftingtiresintothetruckandbegintowearoutquickly.Itwillnevergetdoneyouthink.Whynotjustaskyoutoemptytheoceanwithatablespooninstead?Theninaflashofinsiration,youuseanearbyplanktoformarampintothebackofthepickupandbeginrollingthetiresininstead.Itsureseemslikealotlesswork.Isitreally??Scientistsuseaslightlydifferentdefinitionofworkthanmostofuscommonersdo.Attheendofthislessonwellrevisitour tiredfriendandaskwhichwaytheyredoinglesswork:liftingorrollingthetires.<