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Step 9 of 9 · Mastery

Mission Mental model Demonstration Error hunt Challenge Mastery

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1 Your mission: reusable macros ~5 min
2 Prediction: two heights, one law ~8 min
3 Contract before code ~5 min
4 Invoke and separate responsibilities ~10 min
5 Input, evidence, and diagnosis ~30 min
6 Diagnose macros ~6 min
7 Challenge: two clean directories ~12 min
8 Summary and evidence ~4 min
9 Mastery test ~10 min

Mastery ~10 min · ~0 min remaining

Mastery test

Demonstrate mastery of macros, the ARG contract, and reproducibility across sessions.

Approximate result with tolerance

Expected topology may be exact; FE quantities are accepted only within the declared tolerance.

Module check

Show that you can do it without hints

You need at least 80% and every critical check correct. Each new attempt uses a different six-question variant. Retained mastery is checked later.

6 checks

Competency

Reuse the validated model through macros with contract and evidence.

Pass criterion

Two cases (h=0.08 and 0.10) with passes=1 and CSV reproducible between clean directories.

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1.What is the correct way to clear the session before invoking the driver? Critical

Run /CLEAR inside 08_macro_debug.mac. Run /CLEAR,START and then *USE the driver. Never clean; reuse the previous base.

2.ARG1 arrives with beam_h=0. What should the driver do? Critical

Continue with the default height of M07. Throw error, dump /STATUS and stop with /EOF. Build the same and set passes=0 at the end.

3.Enter theoretical uy_ref (m) for h=0.08 m with F=−1000 N, L=1 m, b=0.05 m, and E=210 GPa. Critical

Numeric answer m

4./INPUT cannot find 08_build.mac. What is the immediate check? Critical

Relax the deflection tolerance. Verify that the submacros are in the working directory and the name in the .out. Change SOLID185 to SOLID186.

5.For case 2 (h=0.08, mesh_h=0.04), how many elements does the contract expect? Critical

Numeric answer elements

6.Prediction: you run the same *USE from two clean directories. What should happen?

The CSVs match numerically. Only the topology matches. The results depend on the previous session.

7.A submacro receives residual selection. Which design is more auditable? Retrieval M02

Declare or restore the state the submacro requires. Trust the caller to leave the right selection.

8.Two runs generate the same plot but different CSV files. Which evidence prevails? Retrieval M07

The numeric discrepancy requires investigation; the plot does not prove reproducibility. The plot, because it is easier to compare.

Confidence prediction Before scoring, what percentage of this module check do you expect to have correct? This prediction does not affect your score. It is used to compare confidence with actual performance.

Retained mastery

Retrieve it after time has passed

Three short reviews are scheduled around days 1, 7, and 21. If you return late, the next gap starts from the review you actually completed.

What is the correct way to clear the session before invoking the driver?

Run /CLEAR inside 08_macro_debug.mac.Run /CLEAR,START and then *USE the driver.Never clean; reuse the previous base.

ARG1 arrives with beam_h=0. What should the driver do?

Continue with the default height of M07.Throw error, dump /STATUS and stop with /EOF.Build the same and set passes=0 at the end.

Enter theoretical uy_ref (m) for h=0.08 m with F=−1000 N, L=1 m, b=0.05 m, and E=210 GPa.

/INPUT cannot find 08_build.mac. What is the immediate check?

Relax the deflection tolerance.Verify that the submacros are in the working directory and the name in the .out.Change SOLID185 to SOLID186.

For case 2 (h=0.08, mesh_h=0.04), how many elements does the contract expect?

elements

Prediction: you run the same *USE from two clean directories. What should happen?

The CSVs match numerically.Only the topology matches.The results depend on the previous session.

A submacro receives residual selection. Which design is more auditable? Retrieval M02

Declare or restore the state the submacro requires.Trust the caller to leave the right selection.

Two runs generate the same plot but different CSV files. Which evidence prevails? Retrieval M07

The numeric discrepancy requires investigation; the plot does not prove reproducibility.The plot, because it is easier to compare.

A submacro works alone but fails after another macro. Which design is more robust? New scenario

Declare or restore the state it depends on internally.Assume every caller leaves the correct selection implicitly.

The same driver produces different CSV files in clean folders. What follows? New scenario

The plot wins if it looks the same.Reproducibility failed; inspect inputs, paths, and state.

A macro needs three inputs. How should it expose them? New scenario

Through a clear contract, checked values, and meaningful names.Through undocumented global variables.

Confidence prediction Before scoring, what percentage do you expect to have retained correctly? This prediction does not affect your score. It is used to compare confidence with actual performance.

Pass with 75% and every selected critical check correct.

What you just achieved

After you pass, M08 will be complete as the bridge to the final project.

View complete module Download m08-kit.zip

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