Invest in what you know or what you don’t know?

Most companies I’ve invested in have been ones that I wasn’t previously familiar with. I only became familiar with the product and industry after many hours of research. This isn’t on purpose—just a result of me not being a user of most public company’s products. The advantage of this is that I approach learning about these new products from a clean slate with few biases. The drawback is that I will probably never understand the product as well as I would if I was a regular user.

The opposite of this is Peter Lynch’s investing style: “Invest in what you know.” Lynch advised people to invest in companies they know and love. Logically, this makes a lot of sense, but I’m not convinced this method is any better (or worse). The advantage of Lynch’s approach is that a user might have a unique insight into the value of a company that other investors may not have or appreciate. The drawback is the user will almost certainly overemphasize their own experience with the company and may discount what the greater population thinks (i.e. the base rate).
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Lessons from Larry Page and Sergey Brin

Reading through all of Jeff Bezos’ annual letters inspired me to read through other letters from very smart people—and Larry Page and Sergey Brin from Google were the first choice. Besides using a bunch of Google services on a daily basis, I’ve never followed them as a public company so I learned a lot reading the letters. The main thing I came away with is an appreciation of how Google has evolved from just a search engine to a smorgasbord of many products and services that all ultimately feed into the search funnel.

If you invested in Google in 1998 (as a private company), you almost certainly would have been betting on their ability to build a search engine. In fact, you can read Larry and Sergey’s original paper from 1998 describing their Google prototype and, not surprisingly, there is no mention of Gmail, Analytics, Chrome, YouTube, Maps, or Android. It’s interesting that, in my opinion, Google’s expansion into so many products would have been impossible to predict, but looking back from today it all seems rather obvious.
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