Jim, as really just a "test" of Chat GPT 4.0, I ran the text of this article, and here's the summary:

Me, to Chat GPT 4:

"Can you please summarize this article?"

Chat GPT 4:

"The article discusses how Berkshire Hathaway’s book value growth is becoming less relevant as a measure of the company’s intrinsic value. Several factors are contributing to this:

1. Book Value vs. Intrinsic Value: The article argues that Berkshire’s intrinsic value, particularly from assets like BNSF (Burlington Northern Santa Fe) and its insurance operations, has grown much faster than book value, meaning book value no longer accurately reflects the company’s true economic worth.
2. Operating Businesses: CEO Warren Buffett acknowledged in 2018 that Berkshire had shifted from holding marketable stocks to focusing on operating businesses, which are undervalued on the balance sheet compared to their real economic value. This shift has widened the gap between book value and intrinsic value.
3. Buybacks: The company’s stock buybacks, often made above book value, have also hindered the growth of book value. These buybacks increase intrinsic value per share but reduce the book value.
4. Key Subsidiaries: The article highlights BNSF and the insurance operations as significant drivers of intrinsic value, noting that their economic worth exceeds their book value by a large margin.
5. Valuation: The article values Berkshire at around $1 trillion, and it suggests that the stock is currently trading close to its intrinsic value, which is unusual, as it often trades at a discount. The author believes the stock is a “hold” at this time, though they have been trimming their position due to more attractive valuations in the past.

In summary, Berkshire’s book value has become less meaningful in gauging its true worth, with intrinsic value being a much better indicator due to the company’s shift toward operating businesses and buyback strategy."