Contrarian investingFinancial historyInvestment bubblesJohn TempletonMarket cyclesMarket fundamentalsMarket psychologyMean reversionRecency biasSpeculative maniaValue investing์กด ํ ํํด 15 Oct 2025 John Templeton - The four most dangerous words in investing are: ‘This time it’s different. "The four most dangerous words in investing are: ‘This time it’s different.’" - John Temp…