Simplicity is Simply Important
Simple software is easier to understand, harder to break, and easier to maintain than software optimized purely for features or speed. When a problem grows complex, the fix is usually breaking it into smaller, simpler ones.
“It is remarkable how much long-term advantage people like us have gotten by trying to be consistently not stupid, instead of trying to be very intelligent.” Charlie Munger’s line captures something counterintuitive: the advantage usually goes not to whoever is cleverest, but to whoever avoids the dumb, complicated mistakes that cleverness tends to invite. Simplicity is that discipline applied directly.
Why Simple Beats Clever
A clever solution is often a fragile one — it works, but only the person who wrote it fully understands why, and only under the conditions they had in mind. A simple solution is boring enough that anyone can verify it’s correct, and boring enough to survive contact with cases the original author never considered. Complexity doesn’t just make something harder to build; it makes it harder to trust.
Simplicity in Software
This shows up concretely in code. Simple software is easier to read, which means bugs are easier to spot and fixes are easier to verify. It’s easier to test, because there are fewer paths through it to cover. It’s easier to profile, because performance problems aren’t hidden behind layers of abstraction. Software optimized purely for features or raw speed tends to accumulate exactly the kind of hidden complexity that makes all three of those harder — until eventually even small changes carry outsized risk.
Applying It
When a problem feels complex, the instinct is usually to add more machinery to handle it. The better move is almost always the opposite: break it into smaller problems until each piece is simple enough to reason about on its own. If a solution needs a long explanation to justify why it’s correct, that’s usually a sign it should be simpler, not that the explanation needs to be better.
The Broader Lesson
Simplicity isn’t a lack of ambition — it’s a filter for avoiding the mistakes ambition tends to introduce. The gain isn’t in what a simple system can do that a complex one can’t; it’s in everything a simple system doesn’t have the surface area to get wrong.
Sources
- ”It is remarkable how much long-term advantage people like us have gotten by trying to be consistently not stupid, instead of trying to be very intelligent” — Charlie Munger, Poor Charlie’s Almanack