This explains, by the way, why we don’t own stocks of tech companies, even though we share the general view that our society will be transformed by their products and services. Our problem — which we can’t solve by studying up — is that we have no insights into which participants in the tech field possess a truly durable competitive advantage. Our lack of tech insights, we should add, does not distress us. After all, there are a great many business areas in which Charlie and I have no special capital-allocation expertise. For instance, we bring nothing to the table when it comes to evaluating
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