Habits That Keep Maps Honest

Four concrete habits turn this into practice:

• Write the prediction down — note what your model says will happen before it happens, then check it against the result. Memory quietly rewrites the score; paper does not
• Name the model out loud — saying "I'm treating this as a supply-and-demand problem" reminds you it is one lens, not the whole picture
• Test the edges — models work well at their center and break at their limits, so push them to find where they fail
• Save a second model for high stakes — when a decision is small, one map is fine; when it is costly, run another lens before you commit.