Managing Complex Tasks and Preparing Decisions

You use structure to make alternatives, dependencies, and uncertainties visible without leaving the decision to AI.

After this chapterYou can phase complex tasks, design decision rules, and support a recommendation with criteria, counterarguments, and explicit uncertainty.

Your progress0 of 40 lessons

3.1

Recognize dependencies and critical paths

A good task structure shows what needs to be proven or chosen first.

Create a dependency map before execution. Note which information is needed for each decision and which step is blocked when that information is missing. For example, a marketing plan can only propose a channel budget once the target group, capacity, and measurement goal are sufficiently clear.

Ask ChatGPT to flag missing links, but check for yourself whether the sequence reflects reality. Start with decisive uncertainties that are inexpensive to investigate: first examine what could rule out a direction before investing substantial effort in developing it.

In a schedule with known task durations and dependencies, a critical path is the path with the longest total duration, which determines the earliest finish date. A dependency map without durations is not yet a calculated critical path. In the chapter example, you first practise with a small schedule for which all the information is provided.

Decision per phase
Required information
Blocking uncertainty
Cheapest decisive test first

How you can use this

First test whether customers recognize the problem before developing a full campaign or solution.

Try this prompt

Create a dependency map for [goal]. For each decision, provide: required information, current status, cheapest valid test, consequence of failure, and which later steps are thereby omitted.

Your practical exercise

Draw five dependencies for your own project and choose the first valid test.

3.2

Plan, execute, check and revise

Give each phase its own prompt, output, and control gate.

First plan which intermediate products are needed. Then carry out one defined phase, check the result against criteria, and revise only the demonstrated weak parts. This cycle prevents a late cosmetic rewrite from hiding a substantive error.

Keep a record of decisions between phases. Note which structure, sources and assumptions have been approved. When revising, ask what must be preserved. A new version is better only when the same assessment basis shows that.

Plan with intermediate products
One phase at a time
Check before revision
Keep approved parts

How you can use this

A report is first structured, then substantiated, then checked, and only then editorially finalized.

Try this prompt

Perform [task] in four phases: plan, first execution, check, targeted revision. Stop after each phase. Show what is fixed, what is still uncertain, and which criteria allow the next step.

Knowledge check

A report’s structure has been approved. One percentage uses the wrong denominator and supports two conclusions. Which revision fixes the content without unnecessarily replacing useful work?

Correct the percentage in the table and keep the two conclusions because their content was approved in the previous round.Have the entire report rewritten using the correct denominator and choose the version that reads most coherently.Recalculate the percentage, reassess the two conclusions and keep the structure if it still fits.

Your practical exercise

Carry out one phase and score it against four criteria. Fix critical errors first, then make targeted improvements to the weakest component.

3.3

Combine decision trees, checklists, and rubrics

Use a decision tree for routes, a checklist for requirements, and a rubric for quality.

These tools solve different problems. A decision tree chooses a route based on explicit conditions. A checklist checks whether necessary components are present. A rubric describes quality levels for each criterion.

Avoid false precision. Weights and scores must have a reason and must not hide knockout conditions. An option that violates privacy policy remains unsuitable even if it scores high on speed. For each score, indicate the source or observation used.

Tree for route choice
Checklist for completeness
Rubric for quality
Knock-out conditions separately

Terms in plain language

Rubric: An assessment framework that describes, for each criterion, the difference between insufficient, sufficient and strong work.

How you can use this

A publication process selects the risk level through a tree, checks mandatory components, and evaluates the text with a rubric.

Try this prompt

Design a decision tree for [process] with a maximum of eight nodes, a checklist with six requirements, and a rubric with four criteria and three levels. Add hard exclusion criteria.

Your practical exercise

Build the three instruments for the same task and check that they are not contradictory.

3.4

Counter perspectives without dramatization

Have alternatives assessed with the same evidence and the same criteria.

A critical role can expose blind spots, but multiple played roles are not independent experts. Therefore, give each perspective a concrete task, such as identifying risks, testing feasibility, or pointing out missing evidence.

Let all perspectives use the same source base and make differences traceable to criteria or assumptions. Then add a synthesis that separates agreement, conflict, and necessary verification. Human or external expertise remains necessary when the domain requires it.

Concrete critical task
Equal source base
Explain differences
No appearance of independent experts

How you can use this

A plan is assessed separately for customer value, operational feasibility, financial implications, and compliance.

Try this prompt

Evaluate [proposal] from four test questions: value, feasibility, risk, and evidence. Use the same sources. Then create a synthesis table with agreement, conflict, decisive assumption, and required external check.

Knowledge check

Three AI perspectives call your plan feasible. A fourth expects insufficient working hours. All four use the same sources. Which next step can resolve the substantive disagreement?

Compare their time assumptions and check the decisive assumption against the implementers’ available hours.Have a fifth AI perspective rank the four recommendations and use the best-argued one.Average the four time estimates and add a reserve to accommodate the difference between the recommendations.

Your practical exercise

Assess one proposal through four review questions and find one piece of external evidence for the most consequential disagreement.

3.5

From brainstorming to a defensible decision

Keep idea generation, choosing criteria, gathering evidence and making decisions separate.

A brainstorm increases options; it does not prove which option is good. First cluster ideas, remove duplicates, and then define criteria based on the goal. Assess options based on available data and mark where a score is only a hypothesis.

Conduct a sensitivity check: does the preference change when an important weight or assumption changes? Finally, do not present artificial certainty. Provide recommendation, alternative, decisive reasons, remaining uncertainty, and next test.

First diverge
Criteria before scoring
Evidence and hypothesis separately
Test sensitivity

Terms in plain language

Sensitivity check: Checking whether the conclusion changes when an important assumption or weight changes.

How you can use this

When choosing a channel, ideas are first broadened and then compared based on target reach, margin, capacity, evidence, and risk.

Try this prompt

Generate ten options for [goal], cluster them, and propose four decision criteria. Let me approve the criteria. Then evaluate a maximum of four options with source values and uncertainties. Test the sensitivity of the recommendation.

Knowledge check

A wins when travel time has a low weight. With a slightly higher, equally defensible weight, B wins. The user has not yet settled this preference. What do you include in the decision proposal?

A remains the recommendation under the first weighting; the second calculation goes in the appendix as an extra scenario analysis.Show how weighting changes the preference, present A and B’s results and ask the user to set travel time’s importance.Give A and B their average score across both weightings; the highest average determines the final recommendation.

Your practical exercise

Work through a small choice of your own or the four fictional venue options in the practical workshop below this lesson. Set conditions and weights before calculating. Done: you exclude unsuitable options, justify the remaining preference and record which new information could change the decision.

Guided practice · then try it yourself

Compare four options: make the decision traceable with figures

Fictional exercise: you are looking for a room for 28 participants. All the details below are given practice facts, not real quotations. At least 28 places is a hard requirement. A high overall score cannot compensate for too few places.

Option	Places	Price per session	Travel time	Facilities available
A · North	30	€180	20 minutes	4 of 5
B · Park	30	€240	10 minutes	5 of 5
C · Station	20	€120	30 minutes	3 of 5
D · Market	30	€180	10 minutes	2 of 5

The five facilities are a microphone, projector, Wi-Fi, flip chart and power sockets near the tables. Award one point per available facility; they count equally in this exercise. For a real decision, verify the details and decide in advance whether any facility is essential.

Exclude C: 20 places is fewer than 28. Record this reason before comparing scores. A, B and D have sufficient capacity.
Assign price points: up to €120 = 5; over €120 up to €180 = 4; over €180 up to €240 = 2. Travel points: up to 10 minutes = 5; over 10 up to 20 = 3; over 20 up to 30 = 1. These scales are choices for this exercise. For values outside these ranges, extend the scale first.
Set the weights in advance: price 50%, travel time 30%, facilities 20%. Together they total 100%. Weighted score = price points × 0.50 + travel points × 0.30 + facility points × 0.20.

Option	Price / travel / facilities	Calculation	Score
A	4 / 3 / 4	4 × 0.50 + 3 × 0.30 + 4 × 0.20	3.70
B	2 / 5 / 5	2 × 0.50 + 5 × 0.30 + 5 × 0.20	3.50
D	4 / 5 / 2	4 × 0.50 + 5 × 0.30 + 2 × 0.20	3.90

With these scales and priorities, D wins. This is a conditional choice, not an objectively best room. Check the scores with a calculator; ChatGPT can help structure them, but repeating the given sum does not prove it.

Sensitivity analysis: what changes if facilities become more important? Give price 20%, travel time 30% and facilities 50%. A scores 3.70, B 4.40 and D 3.30. B now wins. First discuss which priorities suit the event; do not change weights afterwards to make a favourite room win.

Now try it yourself: use the original weights. New information: D has only 24 usable places. Which option do you choose, and which parts of the dossier do you update? Also record one detail you would still check in a real quotation. Then make the same distinction between evidence, hard requirements and preferences for your own assignment.

View the answer and assessment criteria

D is excluded on capacity, just like C. At 3.70, A has the highest score of the remaining options; B scores 3.50. Update the source status, exclusion reason and conclusion. One additional check could be whether the quoted price includes all required facilities. Unknown information becomes an open question, not a favourable invented score.

Worked example

Distinguishing parallel work from the critical path

Fictional practice material; incorrect answers have been created deliberately for this exercise.

An entirely fictional working-group case. Preparing an exhibition requires A: confirm the venue, 2 working days. Then B: edit the text, 3 working days, and C: make the materials, 5 working days, run in parallel. D: set up, takes 1 working day and waits for both B and C. Enough people and materials are available for this schedule.

Input

Calculate the earliest completion time starting from day 0. Show the dependencies, two paths and the calculation. Check separately what a delay in B or C does. Do not assume any overlap beyond the parallel steps described.

First practice answer

The project takes 11 working days: 2 + 3 + 5 + 1. This deliberately flawed answer adds all the effort as if each task had to follow the previous one.

Check

Path A → B → D takes 2 + 3 + 1 = 6 days. Path A → C → D takes 2 + 5 + 1 = 8 days. B and C both start at time 2. D starts only at time 7, when C is finished. The longest path determines the earliest finish time.

Improved version

The exhibition can be ready after 8 working days. Critical path: A → C → D. B has 2 days of slack in this simplified plan: a one-day delay in B does not change the finish time. A one-day delay in C moves completion to 9 days. First check: can work on the materials really start as soon as the venue is confirmed?

Try it yourself

New fictional constraint: B and C are carried out by the same person and cannot happen at the same time. What changes?

View the model answer

The assumed parallelism no longer applies. With sequential execution, the duration becomes 2 + 3 + 5 + 1 = 11 working days. The dependency map must therefore also reflect feasible staffing; the earlier result of 8 days applies only under the original assumptions.

Chapter assignment

Bring everything together

Build a decision file with dependency map, four alternatives, criteria, evidence status, knockout conditions, counter perspectives, and sensitivity analysis.

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