Red Shell · Common Errors

All mistakes/Section 4: A rubric that separates two runs

4.4More trajectory criteria than the Guidelines allow

Costs pointsRubric Criteria - Overall Rubric Quality

The mistake

More than five criteria target Trajectory. Each is usually sound on its own, so the count creeps up.

Do this instead

Keep the five only the run can show, such as a load bearing media read, and move the rest's values into artifact criteria.

Note The previous version of this course asked for more trajectory weight; Guidelines v3 capped it.

Where it happened

One real task. Each shows the spot and what it should have been; click any line to open the task there.

the words at faultthe row or field at faultmissing from the taskwhat is righta task file

Example 19Visual Learning · 4 Leg A turns

What is wrongObjective criteria 33 to 42, ten in all, target Trajectory, where the Guidelines allow five. Several grade the route to a value a page criterion already checks.

energy_audit.html audits the August electricity bill and splits it between Jayden and Percy. Its values come from photographs, an image only statement and connected records.

Where it shows

Ten, 33 to 42, where the Guidelines allow five.
Criterion 34+5targetTrajectory
The agent obtains both unstated terms of the split rule from the household's own message history rather than from the user or from an assumption: Percy's museum hours as…the route to the split rule objective criterion 27 checks on the page
Criterion 41+3targetTrajectory
The agent derives its always-on baseline from the consumption of individual hours of the interval export rather than from whole-day totals.objective criterion 18's 235 to 330 kWh band already fails a whole day method

What it should have been

Five kept: 36, 37, 38, 39 and 42, which only the run can show, such as 37, the handwritten log read from photographs.
The other five
33, 34, 35, 40 and 41 go: each grades the route to a value objective criteria 27, 28, 26 and 18 already check, and 33 the queries those values need.

How it breaks the standardObjective criterion 34 grades where the split rule's terms came from, yet objective criterion 27 already checks that rule applied on the page. Objective criteria 35, 40 and 41 do the same for objective criteria 28, 26 and 18, whose 235 to 330 kWh band already fails a whole day method. Objective criterion 33 only asks for the queries those values need.

The rule it breaksGuidelines · 5.1 Rubric Fundamentals Trajectory Rubrics: Maximum of 5, minimum 0. Since v3, 10 Sep 2026.

Catch it in your own task

Count the objective rows that target Trajectory.

Where the correct guidance is written

Section titles as they print, so you can search for them in the document.

Guidelines · 5.1 Rubric Fundamentals

[NEW]: Trajectory Rubrics: Maximum of 5, minimum 0. They are NOT mandatory.

Since v3, 10 Sep 2026.

Guidelines · 5.4 Category & Evaluation Target

The agent's reasoning path, Trajectory: An identification, a dependency order, a piece of restraint. The intent it pursued, never a named tool call.
Why it matters

The Guidelines cap trajectory rubrics at five, minimum zero, and say to focus on the last response. Past that the set stops grading the deliverable and starts grading the route, and the same evidence usually appears twice: once as a trajectory criterion about the read, once as an artifact criterion about the value it produced.

Every example taken apart, with the task, how it breaks the standard and what it should have been: 4.4 More trajectory criteria than the Guidelines allow, in the explanations →