Skill Gap Management
also Maintaining a Skill Gap
Deliberately keeping your target skill a margin behind your prerequisite skill, because the further you lag the prerequisites the cheaper and lower-error each gain becomes.
Skill gap management is CF’s advice for how far to let a target skill lag behind the prerequisites it builds on. CF models learning with a point system: prerequisites scored on a 0-100 scale set an approximate ceiling on the skill that depends on them, and the dependent skill trails below that ceiling. The size of that lag is not waste to be minimized — it is a resource to be managed.
The core claim is that effort is cheapest when you are well behind your ceiling and gets steadily harder as you push toward it. If your CF skill is 30 points behind your prerequisites, the next point is easy; if it is only 5 points behind, the same point is hard and error-prone. So you reach a given level of the target skill more efficiently by first raising the prerequisites and then closing the distance, rather than grinding the target up against a low ceiling. The same point is learned either way; the managed gap just makes learning it cheap and reduces your error rate.
This cuts against two opposite mistakes. One is the perfectionist who over-masters every prerequisite to 100 before touching the target — wasting effort on diminishing returns near a maximum. The other is the rusher who jams the target skill right up against weak prerequisites, paying a high difficulty and error cost. CF prescribes a gap that shifts with level: 25+ points behind when scores are low, narrowing to under 20 at medium scores, and shrinking toward zero only at high scores (90+), where it finally pays to push the target up and even begin creating new knowledge past the ceiling. Managing the gap is operationalized through cycling between topics — alternating work on the target and its foundations so neither drifts too far ahead.