>>10641506 >idEas iN thE physiCaL sCIENCEs hAVe EVOLvEd undEr SeVeRAL basIC selecTiOn ruLEs. FirsT, SCiENtIsTS igNorE iDeaS tHat lack tEStAble coNsEQuEnceS; tHEY THuS KEeP thEiR hEads frOm BEINg Clogged BY UselESs parAsITES. SEcOnD, sCIEnTiSts sEEk rePLaCemeNTs fOr iDeaS thAT HavE faIlED Tests. fiNAlLY, scieNtistS SEEk IdeaS thAT mAkE THe wIDEsT poSSiBlE Range of EXacT pREDictIOnS