Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

What did John Templeton mean when he said that the four most dangerous words in investing are: ‘this time it’s different'?
There's an elephant in the room that no one is addressing: Suckers. Usually when there's a bubble, many people are fully aware that its a bubble. "This time its different" is a sales pitch to the outsiders. It the dotcom boom for example a lot of people knew that the P/E was ridiculous but bought objectively valueless tech stocks with the idea of unloading them later to even bigger fools. People view it like the children's game musical chairs: as long as I'm not standing when the music ends some other sucker gets left holding the bag. But once you get that first hit of easy money, its sooo tempting to keep playing the game. Sometimes, if it lasts long enough, you start to drink your own kool-aid: gee maybe it really is different this time. The best way to win a crooked game is not to play*. *Just in case someone thinks I'm advising against the stock market in general, I'm not: I'm advocating not buying stocks that you know are worthless with the hope of unloading them on some other sucker.