Why Isolated Courses Don't Compound

Most people's course history looks like a shelf of unrelated books: a bit of design here, a strategy course there, something on leadership picked up during a rough quarter at work. Each one was genuinely useful in the moment. And yet, a year later, it's hard to point to what changed.

This isn't a motivation problem. It's a structural one. A single course, however well made, teaches a bounded skill inside a bounded context. It rarely tells you how that skill relates to the five adjacent skills you'd need to actually apply it under real conditions. So the knowledge sits there, correct but disconnected, waiting for a context that never quite arrives.

Compounding requires connection. When a course in evidence-based reasoning sits next to a course in product strategy, something changes: you start noticing where your strategic arguments are resting on weak evidence, and where your evidence has no argument attached to it. Neither course alone produces that observation. The connection between them does.

This is the argument for learning paths over course shopping. A path doesn't just sequence content by difficulty — it sequences it by relationship, so that each new course sharpens the ones before it instead of sitting next to them unused.

The practical test is simple: after finishing something, ask not 'what did I learn' but 'what does this change about the last thing I learned.' If the honest answer is nothing, you've added a fact. If the answer is something, you've built a connection — and connections, not facts, are what compound.