Shyon
05-02
The Birthday Paradox has always intrigued me—especially how Warren Buffett used it to win a bet. At first, it seems unlikely that in a group of 25 people, two would share a birthday, but the math shows a 57% chance. It’s a great example of how our intuition often fails when dealing with probability.

This kind of thinking error appears often in the stock market. Many believe a stock that has dropped 50% is unlikely to fall further, but if fundamentals worsen, another 20% drop is very possible. Markets respond to present conditions, not past price movements—just like a coin toss has no memory.

One of the best lessons I’ve learned from Buffett is the power of independent thinking and patience. Like waiting for the right pitch in baseball, good investing means staying calm and avoiding emotional decisions. Paradoxes like this sharpen my thinking and remind me to always question what seems obvious.

$Berkshire Hathaway(BRK.A)$

@Tiger_SG @Tiger_comments @TigerStars

The Buffett Series: What Surprising Truths Have You Overlooked?
There is a classic probability puzzle known as the "Birthday Paradox". Warren Buffett once used this paradox to make a bet. This case is quite meaningful, as it serves as a reminder that: Probability is more counterintuitive than we imagine. There are many such examples in the stock market. Throughout his life, Buffett has shared numerous quotes and stories that serve as warnings to investors. Would you like more examples of counterintuitive investing principles or mental models? What other Buffett anecdotes do you know? What’s the best lesson Buffet ever teach to you?
Disclaimer: Investing carries risk. This is not financial advice. The above content should not be regarded as an offer, recommendation, or solicitation on acquiring or disposing of any financial products, any associated discussions, comments, or posts by author or other users should not be considered as such either. It is solely for general information purpose only, which does not consider your own investment objectives, financial situations or needs. TTM assumes no responsibility or warranty for the accuracy and completeness of the information, investors should do their own research and may seek professional advice before investing.

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