6 exercises
Work & project decisions
Use these evidence-reviewed lenses when a team is choosing a direction, interpreting results, deciding whether to continue, or turning metrics into action.
Practice Lab
Train the question, not the label.
Definitions are easy to recognize after you have seen the answer. These sets practice a harder step: choosing which evidence-reviewed lens gives you the most useful first question in a real decision context.
Practice sets
11 contexts, 57 evidence-linked exercises.
6 exercises
Forecasting & future choices
Use these evidence-reviewed lenses when estimating uncertainty, imagining future feelings or preferences, or reviewing forecasts after the outcome is known.
6 exercises
AI-assisted decisions
Use these evidence-reviewed lenses when a chatbot, model, recommendation system, or automated decision aid is influencing what you believe or do.
6 exercises
Project estimation & delivery
Use these evidence-reviewed lenses when setting a deadline, estimating effort, discussing delivery risk, or learning from a project that finished later than expected.
6 exercises
Checking claims & misinformation
Use these evidence-reviewed lenses when deciding whether a repeated claim is trustworthy, checking a correction, or testing an explanation against plausible alternatives.
4 exercises
Comparing plans & pricing
Use these evidence-reviewed lenses when comparing subscription tiers, product plans, vendor offers or recommendation menus where the way options are arranged may change what looks attractive.
4 exercises
Defaults, settings & choice architecture
Use these evidence-reviewed lenses when a form, product, policy or system decides what happens if a person does nothing, or when an existing setting is difficult to reconsider.
5 exercises
Presenting risk & options
Use these evidence-reviewed lenses when a report, interface, model, or recommendation is presenting numbers and choices that other people will use to decide.
4 exercises
Reviewing KPIs & proxy metrics
Use these evidence-reviewed lenses when a team is using scores, dashboards, targets, benchmarks, or AI evaluations to represent a broader objective.
3 exercises
Was the past really better?
Use these evidence-reviewed lenses when a personal memory or broad story about decline is being used to compare the present with an earlier period.
7 exercises
Continue, change, or stop a project
Use these evidence-reviewed lenses when a project has disappointing results and the next decision is whether to invest more, change direction, or stop.
What this is not
Not a personality test. Not a diagnosis.
Several cognitive patterns can fit the same situation. The goal is to learn useful questions and then inspect the evidence behind them.
Practice by skill
Choose what you want to get better at.
The same exercises can be approached through a decision context or through the skill they develop.
Experiments Lab
Practice recognition, then inspect the manipulation.
Practice asks which lens fits. Experiments change one variable and let you compare the alternative condition.
Realistic reasoning scenarios
Move beyond matching a question to a bias name.
Practice choosing a useful first action, identifying missing evidence and keeping alternative explanations visible.