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Mental model ~6 min · ~28 min remaining in this part

A ladder, not a verdict

Visualizing, extracting, and validating are different actions with different evidence.

Operational mental map

Visualise, extract, and validate

A contour answers “where”; extraction answers “how much”; validation asks “is it defensible?”.

Complete the diagram from memory

Predict the missing relationships before revealing the model

Write the idea, not the exact wording. The comparison is feedback, not a grade.

3 missing links
1Input

Question

Quantity, region, and result system defined.

Mental model — A ladder, not a verdict

Confidence ladder from solution to engineering decision
Figure 1. Solve, balance, converge, and validate are different tests.

A completed solution may still violate equilibrium. A balanced model may remain mesh-dependent. A converged quantity may still rest on incorrect physical assumptions. M07 does not replace the previous checks; it incorporates them as preconditions.

Quick check

Does a reasonable-looking PLNSOL contour demonstrate validation?

View complete module Download m07-kit.zip