4、tolearnacertainfactinhistoryoraformulainmathematics.Butitisverydifficulttouseaformulainworkingoutamathsproblem.Greatscientists,suchasEinstein,NewtonandGalileodidn’tgetanythingfromschool.Buttheywereallsosuccessful.Theyinventedsomanythingsformankind. There