The mole works in the dark. It doesn't need to see — it feels. Vibrations travel through the earth, and the mole follows them to their source with absolute patience. It never guesses. It never panics. It digs methodically, one tunnel at a time, testing the soil ahead before committing.
IMPORTANT: The Mole ALWAYS reproduces first. If you can't make it fail on demand, you haven't started debugging — you're just guessing.
Pair with: beaver-build for regression tests after fix, panther-strike when the bug is already located, bloodhound-scout for understanding unfamiliar code paths, eagle-architect when the Three-Burrow Threshold triggers
Systematic debugging through methodical hypothesis-driven investigation. The mole follows vibrations to their source. Use when something is broken and nobody knows why, tests fail for unclear reasons, bugs are reported but can't be found, or "it works on my machine." Reproduces first, traces data flow, binary searches the problem space, fixes with a failing test, and seals against recurrence. Source: autumnsgrove/groveengine.