During the Berkshire Hathaway shareholders meeting, famed investor Warren Buffett emphasized that opportunity arises from other people making mistakes. Despite a comment from his partner, Charlie Munger, earlier about how value investors would struggle to find good opportunities in the future, Buffett remains optimistic that there are plenty to be found. He stated that technology doesn't make a difference but also acknowledged that the world has changed since he started his career. Although many claim the key to investing like Buffett lies in his shareholder letter or following his advice, Buffett noted that the principles Ben Graham wrote about investing in his book "The Intelligent Investor" still hold true today, especially the one about buying good companies at discount prices.