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ParadigMs! 
thOmas kuHn 
1922 – 1996 
faLsifiCation! 
karL poPper 
1902 – 1994 
vS
PhySiCist 
BecAme IntErEstEd 
in HisTory and 
PhiLoSopHy of SciEnce 
ThoMas S. Kuhn 
(1922 – 1996) 
it’s TouGh With 
EinStein AroUnD. 
the StrUcTure of SciEnTifIc 
RevOlUtiOns (1962) 
AddEd a PosTsCriPt in 
the 2nd EdiTion(1969)
NoRmAl 
ScIeNcE 
ReVoLuTiOnArY 
ScIeNcE
NoRmAl 
ScIeNcE 
ShaRed InsTrUmeNts and TecHnIquEs 
ShaRed MetApHysIcs 
ShaRed ValUes 
ShaRed TheOrEtiCal BelIefs 
ExeMpLars 
ExeMpLars 
ExeMpLars 
ExeMpLars
NoRmAl 
ScIeNcE 
ShaRed InsTrUmeNts and TecHnIquEs 
ShaRed MetApHysIcs 
ShaRed ValUes 
ShaRed TheOrEtiCal BelIefs 
ExeMpLars 
ExeMpLars 
ExeMpLars 
ExeMpLars 
TheSe Form a DisCiPliNary 
MatRiX, or ParAdigm*. 
and Just to ConFuse you, i 
SomEtImes Call the ExeMpLars of 
Good SciEnce ParAdIgmstoo. 
ComMiTmeNt to the DisCiPliNary MatRix is a pre- 
ReqUiSite for SucCeSsfUl NorMal SciEnce. 
TheRe is TheReFore a TenSion BetWeen 
the DesIre for InnOvAtiOn and the 
Need to “ThiNk WitHin the box”.
NoRmAl 
ScIeNcE 
ShaRed InsTrUmeNts and TecHnIquEs 
ShaRed MetApHysIcs 
ShaRed ValUes 
ShaRed TheOrEtiCal BelIefs 
not TesTed 
AnoMaLous 
ResUlts are 
TolErAted 
RevOlUtiOns are not 
SouGht for ExcEpt 
UndEr ExtReme 
CirCuMstAnces 
ExeMpLars 
ExeMpLars 
ExeMpLars 
ExeMpLars
NoRmAl 
ScIeNcE 
Anomaly 
AnAnoommalayl y 
Anomaly 
AnomalAyn omaly Anomaly Anomaly Anomaly 
AnomaAlnyo maly Anomaly 
ShaRed InsTrUmeNts and TecHnIquEs 
ShaRed MetApHysIcs 
ShaRed ValUes 
ShaRed TheOrEtiCal BelIefs 
AAnnoommaallyy 
ExeMpLars 
ExeMpLars 
ExeMpLars 
ExeMpLars
CrIsIs! 
ExeMpLars 
ExeMpLars 
ShaRed MetApHysIcs
A ScIeNtIfIc ReVoLuTiOn Is … 
not CumUlAtiVe.! 
not GovErned by RulEs. 
UltImAteLy SetTled by ComPaRing 
the PuzZle-SolVing PowEr of the 
ComPeTing IdeAs. 
CumUlAtiVe.! 
GovErned by RulEs of LogIc. 
UltImAteLy SetTled by ComPaRing 
the ComPeTing HypOtHesEs’ AbiLity 
to ResIst AttEmpts to FalSify Them.
ScIeNtIfIc PrOgReSs 
the RevOlUtiOnary SeaRch for a RepLaCemEnt ParAdigm 
is DriVen by the FaiLure of the ExiSting ParAdigm to 
SolVe CerTain AnoMaLies. 
the RepLaCemEnt ParAdigm SolVes the MajOrity of 
ThoSe PuzZles and RetAin Much of the ProBlem-SolVing 
PowEr of its PreDeCesSoR. 
HowEver, we CanNot InfEr From the IncRease in ProBlem- 
SolVing PowEr ProVided by the new ParAdigm That we are 
now CloSer TotHeTruTh, BecAuse ParAdIgms are 
IncOmMenSuRabLe* With one AnoTher.
PrOgReSs 
* thE sciEnce GuideD by onE 
ParadIgm iS incOmmenSurabLe witH 
The sCiencE devElopeD undEr a 
DiffeRent ParadiGm, in tHat tHere iS 
No coMmon MeasuRe of the 
DiffeRent TheoriEs. 
RevOlUtiOnary SeaRch for a RepLaCemEnt ParAdigm 
the FaiLure of the ExiSting ParAdigm to 
SolVe CerTain AnoMaLies. 
RepLaCemEnt ParAdigm SolVes the MajOrity of 
and RetAin Much of the ProBlem-SolVing 
PreDeCesSoR. 
CanNot InfEr From the IncRease in ProBlem- 
ProVided by the new ParAdigm That we are 
CloSer TotHeTruTh, BecAuse ParAdIgms are 
IncOmMenSuRabLe* With one AnoTher.
anomaly 
anomaly 
anomaly 
anomaly 
anomaly 
anomaly 
anomaly 
anomaly

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Popper v. Kuhn

  • 1. ParadigMs! thOmas kuHn 1922 – 1996 faLsifiCation! karL poPper 1902 – 1994 vS
  • 2. PhySiCist BecAme IntErEstEd in HisTory and PhiLoSopHy of SciEnce ThoMas S. Kuhn (1922 – 1996) it’s TouGh With EinStein AroUnD. the StrUcTure of SciEnTifIc RevOlUtiOns (1962) AddEd a PosTsCriPt in the 2nd EdiTion(1969)
  • 4. NoRmAl ScIeNcE ShaRed InsTrUmeNts and TecHnIquEs ShaRed MetApHysIcs ShaRed ValUes ShaRed TheOrEtiCal BelIefs ExeMpLars ExeMpLars ExeMpLars ExeMpLars
  • 5. NoRmAl ScIeNcE ShaRed InsTrUmeNts and TecHnIquEs ShaRed MetApHysIcs ShaRed ValUes ShaRed TheOrEtiCal BelIefs ExeMpLars ExeMpLars ExeMpLars ExeMpLars TheSe Form a DisCiPliNary MatRiX, or ParAdigm*. and Just to ConFuse you, i SomEtImes Call the ExeMpLars of Good SciEnce ParAdIgmstoo. ComMiTmeNt to the DisCiPliNary MatRix is a pre- ReqUiSite for SucCeSsfUl NorMal SciEnce. TheRe is TheReFore a TenSion BetWeen the DesIre for InnOvAtiOn and the Need to “ThiNk WitHin the box”.
  • 6. NoRmAl ScIeNcE ShaRed InsTrUmeNts and TecHnIquEs ShaRed MetApHysIcs ShaRed ValUes ShaRed TheOrEtiCal BelIefs not TesTed AnoMaLous ResUlts are TolErAted RevOlUtiOns are not SouGht for ExcEpt UndEr ExtReme CirCuMstAnces ExeMpLars ExeMpLars ExeMpLars ExeMpLars
  • 7. NoRmAl ScIeNcE Anomaly AnAnoommalayl y Anomaly AnomalAyn omaly Anomaly Anomaly Anomaly AnomaAlnyo maly Anomaly ShaRed InsTrUmeNts and TecHnIquEs ShaRed MetApHysIcs ShaRed ValUes ShaRed TheOrEtiCal BelIefs AAnnoommaallyy ExeMpLars ExeMpLars ExeMpLars ExeMpLars
  • 8. CrIsIs! ExeMpLars ExeMpLars ShaRed MetApHysIcs
  • 9. A ScIeNtIfIc ReVoLuTiOn Is … not CumUlAtiVe.! not GovErned by RulEs. UltImAteLy SetTled by ComPaRing the PuzZle-SolVing PowEr of the ComPeTing IdeAs. CumUlAtiVe.! GovErned by RulEs of LogIc. UltImAteLy SetTled by ComPaRing the ComPeTing HypOtHesEs’ AbiLity to ResIst AttEmpts to FalSify Them.
  • 10. ScIeNtIfIc PrOgReSs the RevOlUtiOnary SeaRch for a RepLaCemEnt ParAdigm is DriVen by the FaiLure of the ExiSting ParAdigm to SolVe CerTain AnoMaLies. the RepLaCemEnt ParAdigm SolVes the MajOrity of ThoSe PuzZles and RetAin Much of the ProBlem-SolVing PowEr of its PreDeCesSoR. HowEver, we CanNot InfEr From the IncRease in ProBlem- SolVing PowEr ProVided by the new ParAdigm That we are now CloSer TotHeTruTh, BecAuse ParAdIgms are IncOmMenSuRabLe* With one AnoTher.
  • 11. PrOgReSs * thE sciEnce GuideD by onE ParadIgm iS incOmmenSurabLe witH The sCiencE devElopeD undEr a DiffeRent ParadiGm, in tHat tHere iS No coMmon MeasuRe of the DiffeRent TheoriEs. RevOlUtiOnary SeaRch for a RepLaCemEnt ParAdigm the FaiLure of the ExiSting ParAdigm to SolVe CerTain AnoMaLies. RepLaCemEnt ParAdigm SolVes the MajOrity of and RetAin Much of the ProBlem-SolVing PreDeCesSoR. CanNot InfEr From the IncRease in ProBlem- ProVided by the new ParAdigm That we are CloSer TotHeTruTh, BecAuse ParAdIgms are IncOmMenSuRabLe* With one AnoTher.
  • 12. anomaly anomaly anomaly anomaly anomaly anomaly anomaly anomaly