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Mental model ~6 min · ~78 min remaining

A ladder, not a verdict

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

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?