What are the unconventional investment strategies used by Berkshire and how do they contribute to its success?

The theme of 'inactivity bordering on sloth' in Berkshire's investment strategy refers to the long-term, buy-and-hold approach that Warren Buffett is known for. This approach is more aligned with passive investing, which involves buying and holding a diversified portfolio of assets, rather than trying to beat the market through frequent buying and selling, which is characteristic of active investing. Contemporary debates on active versus passive investing often revolve around the question of whether active managers can consistently outperform the market. Buffett's success with his passive, long-term approach suggests that it can be a viable strategy, although it requires patience and a willingness to ignore short-term market fluctuations.

Traditional sectors like manufacturing or retail can apply the investment techniques used by Berkshire by adopting a long-term investment strategy. This involves concentrating investments in a few high-quality companies and holding onto these investments for an extended period, often over 20 years. This approach requires a deep understanding of the companies invested in and a strong belief in their long-term potential. Additionally, these sectors can benefit from providing companies with freedom from Wall Street scrutiny and near unlimited access to capital, similar to Berkshire's approach.