Purpose
A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once.
Systems Thinking Mapping tool
Current Reality Tree
The Current Reality Tree shows which common causes can sufficiently explain observed undesirable effects.
The Theory of Constraints Current Reality Tree connects observed undesirable effects (UDEs) through sufficient cause-and-effect logic. Joint prerequisites use AND; the tree helps examine influential common causes.
Which common causes can sufficiently explain the observed undesirable effects?
- Participants
- 3-8 participants
- Time
- Several sessions; 60–120 minutes per logic block
UDEs
UDEs capture
State concrete undesirable effects as full sentences with evidence and system boundary.
Causal chains
Causal chains
Connect causes and intermediate effects to UDEs using if-then statements.
Logic review
Check logic
Check clarity, existence, causality and sufficiency of every link.
Core causes
Examine common driver
Trace causes explaining several important UDEs and examine their actual influence.
Review logic with affected people and counterevidence; separately examine future effects of solution hypotheses afterwards.
A good fit when
For several connected system problems whose common drivers are unclear.
Ideal for
- Complex Problem Solving
- Process Improvement
- Systems Change
Not good for
- Quick individual decisions
- Problems without a shared system understanding
Outputs
UDE causal model
Reviewed causal tree with UDEs, intermediate effects, AND conditions, assumptions and a justified change focus.
Change focus
The change focus keeps unexplained effects and model limits visible.
Current Reality Tree· worksheet
Fictional example
The Theory of Constraints Current Reality Tree connects observed undesirable effects (UDEs) through sufficient cause-and-effect logic. Joint prerequisites use AND; the tree helps examine influential common causes.
UDEs
Which observed undesirable effects and evidence belong to the system?
Fictional: U1 jobs wait a long time; U2 commitments are missed; U3 staff frequently switch between open jobs.
Causes and conditions
Which complete statements describe causes and intermediate effects?
C1 All incoming jobs start immediately. C2 Arrivals temporarily exceed completions. C3 Many jobs are open simultaneously. C4 A few people split their work across all open jobs.
If-then links
Which conditions operate jointly and what effect follows?
C1 AND C2 → C3. C3 AND C4 → U3. U3 AND measurable switching overhead → lower completion rate. That rate AND high open volume → U1. U1 AND unchanged short commitments → U2.
Checks and gaps
Which arrows are evidenced, what assumptions remain and which counterexamples are checked?
Fictional board history supports high open volume and switching. The effect of switching cost remains a hypothesis; sample times. Check material shortages as another cause.
Change focus
Which confirmed cause warrants further change analysis and where does the claim end?
Starting every job immediately is a testable policy candidate. Next examine limiting parallel work as a solution hypothesis; do not claim its effect yet.
All example details are fictional and illustrate the application.
First step
Collect system boundary and verifiable UDEs; keep observations, causal assumptions and possible solutions separate.
Good to do first
Deep dive
How it works
First, undesired effects are collected and condensed without judgment. Then the team links them through cause-and-effect logic until solid causal chains emerge. In the end, a few causes remain where change pays off the most.
In detail
The Current Reality Tree helps because several undesired effects can be traced back to underlying causes instead of being treated in isolation. Good application checks every connection strictly for plausibility and avoids jumping from symptom to favorite cause. This creates a causal condensation that shows which few core problems repeatedly produce a whole field of disturbances.
Facilitation
At the start, collect only actually observed undesired effects, not pre-sorted explanations. The process shows its quality when different symptoms trace back to the same underlying cause for the first time. Close with a tree whose critical links are named and a decision on which core cause gets investigated further first.
The method guide walks execution through 4 phases, timing, 4 pitfalls, and clear stop criteria.
Open method guideYour perspective
Does this method help with your work?
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Sources and topics
Artifact templates
Current Reality Tree: WorksheetCollect system boundary and verifiable UDEs; keep observations, causal assumptions and possible solutions separate.markdown
Current Reality Tree: WorksheetCollect system boundary and verifiable UDEs; keep observations, causal assumptions and possible solutions separate.
markdowncurrent-reality-tree-working-template.md
Collect system boundary and verifiable UDEs; keep observations, causal assumptions and possible solutions separate.
Current Reality Tree: Worksheet
Question
To be confirmed
Desired outcome
To be confirmed
Scope
Complete cycle Time: Several sessions; 60–120 minutes per logic block
Complete this worksheet on paper or in your own document during the work.
Preparation for this scope
Method setup
- Materials: UDE cards, evidence, directed links and visible AND junctions.
- Roles: System experts with different perspectives and facilitator familiar with TOC logic.
- Advance information: Collect system boundary and verifiable UDEs; keep observations, causal assumptions and possible solutions separate.
- Overall time needed: Several sessions; 60–120 minutes per logic block
- Setup: Arrange UDEs above causes; read arrows from cause to effect and mark AND junctions visibly.
Prepare for the work steps
UDEs: UDEs capture
- System observations
- Evidence
Causal chains: Causal chains
- UDEs
- Process knowledge
Logic review: Check logic
- Causal skeleton
- Counterevidence
Core causes: Examine common driver
- Reviewed logic
- Scope of influence
Current Reality Tree· worksheet
UDEs
Which observed undesirable effects and evidence belong to the system?
...
Causes and conditions
Which complete statements describe causes and intermediate effects?
...
If-then links
Which conditions operate jointly and what effect follows?
...
Checks and gaps
Which arrows are evidenced, what assumptions remain and which counterexamples are checked?
...
Change focus
Which confirmed cause warrants further change analysis and where does the claim end?
...
Answer the prompts with your own information. Explicitly mark unknowns and assumptions.
Flying Logic: Current Reality Tree
UDEs: UDEs capture
Expected artifact: UDE list
Is every UDE verifiably observed?
Entry:
...
- Is every UDE verifiably observed?
Causal chains: Causal chains
Expected artifact: Causal skeleton
Are the named conditions sufficient for the effect?
Entry:
...
- Are the named conditions sufficient for the effect?
Logic review: Check logic
Expected artifact: Reviewed logic
Does the link withstand a concrete counterexample?
Entry:
...
- Does the link withstand a concrete counterexample?
Core causes: Examine common driver
Expected artifact: Change focus
Does the driver explain multiple UDEs through checked paths?
Entry:
...
- Does the driver explain multiple UDEs through checked paths?
Open questions and next steps
...
Method guide: https://methodatlas.meierhoff-systems.de/en/methods/current-reality-tree/run-sheet
Alternatives and neighbors
Fitting alternatives with decision guidance, followed by other related methods.
Systems Thinking
Causal Loop Diagram
Instead of Current Reality Tree, when a system of effects with loops needs to become understandable and no TOC logic is needed.
Systems Thinking
Theory of Constraints Thinking Process
Moves from current problems through core conflicts and future logic to a viable path through a bottleneck.
Systems Thinking
Iceberg Model
Layers events, patterns, structures, and mental models to find deeper causes and interventions.
Systems Thinking
Intervention Mapping
Links problem, target group, determinants, and actions into an actionable change program with evaluation.
Systems Thinking
Leverage Points
Moves relationships, patterns, and leverage toward a concrete result through "introduce the twelve leverage points", "collect planned actions", and "formulate a strategy across multiple levers".
Systems Thinking
Stock and Flow Diagram
Models stocks, inflows and outflows, and delays to understand dynamics, bottlenecks, and capacity.
Constraints and origin
HighWorkshop2-6 h
Profile
- Method form
- Mapping tool
- Participants
- 3-8
- Time
- 2-6 h
- Maturity
- Canonical
- Origin
- Eliyahu M. Goldratt
Next up: Future Reality Tree