In deciding what books to read I am not 100% formulaic, but I do keep a few things in mind. I recognize that books follow a scale of difficulty (at least for me), I try to read thematically – following my curiosity, and I am conscious of the Copernican principle (Lindy effect).
The Scale of Difficulty:
I was on vacation recently and had the opportunity to do a lot of reading. Over 15 days (long vacation, I know), I read seven books. Of those, four of them were fiction and were twice the length of the non-fiction books. When I read fiction (typically sci-fi and sometimes fantasy), I can’t put the book down. Over the course of two days, I read the entire Red Rising trilogy (1,400 pages). In contrast, it took me four days to read Thinking in Systems (just over 200 pages). This prompts the question, how can I read non-fiction books at the same rate as fiction books? Answer: I can’t. 🙁 (If you don’t have that issue…then probably not worth reading this section!) However, understanding the spectrum of difficulty and value a bit more may allow me to make better reading decisions.
I broadly group books into four categories (any time you attempt to categorize something you are forsaking accuracy for simplicity – categorizing books is no different and many times books overlap many of the categories):
There are a few takeaways from the above chart.
One, there are really three outcomes in reading: it provides entertainment, information on a subject, and/or mental models that one can use to see the world. In most cases, books overlap in outcomes. Team of Rivals was an entertaining read that provided information on Lincoln’s era and provided me with mental models around the importance of magnanimity and timing.
Two, by forcing a books categorization and explicitly assigning a reading difficulty to it, it allows me to be more selective in what “harder” books I read. If I pick up an informational or fiction book, the cost (measured in difficulty in reading and time spent on it (not time explicitly reading it but from the time one started a book to the day they finished it)) is much lower. The cost, however, for a harder book is much more. It takes much longer to get through and is in the background of my kindle constantly telling me to read it. Thus, it follows, that one should do extra due diligence on a more difficult book before starting it.
Lastly, while outcomes could be similar, the ease of reading may not be. For example, I tried reading / finishing No Ordinary Time by Goodwin the same author of Team of Rivals (a book I loved). I only made it through 250 pages and that took me a few months. Recently, I read Napoleon by Andrew Roberts (800 some pages) and was able to finish it in two weeks. Since I didn’t finish No Ordinary Time I can’t definitively say the outcomes are similar, but from what I did read I felt I received the same value, if not more, from Napoleon over No Ordinary Time. Eventually, you build up a baseline of how much value a book should bring relative to its difficulty. When that difficulty exceeds the value, don’t be afraid to put it down. By languishing through No Ordinary Time, I not only felt guilty when I wasn’t reading it (eschewing it for easier books), but I also wouldn’t read much at all. Recognize that that guilt and not reading is irrational, and stop reading it entirely. (Of course, these “costs” are my own experiences. If those costs don’t manifest in your reading habits, then my advice is moot.)
Thematic Reading – A function of curiosity:
I find that I read thematically due to my curiosity on a subject matter. (I won’t belabor the value of reading multiple sources with different viewpoints on a subject matter – that is a fairly well-established default position.) When you are hyper-curious about something leverage that. In the same way creatives cultivate and exploit their “muse”, cultivate and exploit your curiosity to dive into a subject. For once curiosity wanes, I find it more (it isn’t like the difficulty melts away, unfortunately, but it is less) difficult to get through the harder books.
The Copernican Principle:
To quote Algorithms to Live By (page 135) (Gott was trying to determine how long the Berlin wall would last):
“He made the assumption that the moment when he encountered the Berlin Wall wasn’t special—that it was equally likely to be any moment in the wall’s total lifetime. And if any moment was equally likely, then on average his arrival should have come precisely at the halfway point (since it was 50% likely to fall before halfway and 50% likely to fall after). More generally, unless we know better [emphasis mine] we can expect to have shown up precisely halfway into the duration of any given phenomenon. And if we assume that we’re arriving precisely halfway into something’s duration, the best guess we can make for how long it will last into the future becomes obvious: exactly as long as it’s lasted already. Gott saw the Berlin Wall eight years after it was built, so his best guess was that it would stand for eight years more. (It ended up being twenty.) This straightforward reasoning, which Gott named the Copernican Principle, results in a simple algorithm that can be used to make predictions about all sorts of topics.”
One of those topics is books. If Meditations by Marcus Aurelius is still relevant today (and I have no other data points aside from that), then it will be relevant for the duration of my lifetime. Any book that has the possibility to be relevant for the duration of my life sounds like a good book to read. Of course, I don’t eschew newer books purely for older books, but keeping this Principle in minds provides a solid base rate.