According to Andrew Ng (@AndrewYNg) on Twitter, Warren Buffett’s 'Circle of Competence' concept emphasizes focusing trading decisions within areas where one has proven expertise, a principle Ng applies at @AI_Fund. For crypto traders, this approach can lead to more disciplined risk management and improved portfolio performance, as focusing on assets and markets within one’s competence reduces exposure to unforeseen volatility (source: Andrew Ng Twitter, May 4, 2025).