Simulation Scenario Standard - (SSS)

OOF™ Origin Open Foundation™

Independent Methodological Authority


Governance Flow

Governed Simulation Object

↓

Simulation Purpose & Scope

↓

Reality Representation

↓

Governed Assumptions

↓

Governed Model & Environment

↓

Governed Input & Data Basis

↓

Scenario Requirement Identification

↓

Baseline & Expected Conditions

↓

Scenario Variation

↓

Edge-Case Identification

↓

Stress-Condition Design

↓

Scenario Combination & Interaction

↓

Scenario Coverage Assessment

↓

Scenario Acceptance / Expansion /
Restriction

↓

Governed Simulation Scenario Set

↓

Simulation Execution

Operational Space

SSS governs simulation-specific conditions relating to: scenario
identification, scenario purpose, scenario identity, scenario classification,
baseline scenarios, nominal scenarios, expected-condition scenarios,
alternative scenarios, scenario variation, parameter variation, input
variation, environmental variation, behavioral variation, uncertainty-driven
scenarios, boundary scenarios, edge cases, rare conditions, failure scenarios,
degraded-state scenarios, transition scenarios, recovery scenarios, stress
conditions, extreme conditions, combined conditions, correlated conditions,
multi-factor scenarios, cascading scenarios, sequential scenarios, scenario
interaction, scenario dependency, scenario prioritization, scenario exclusion,
scenario sufficiency, scenario coverage, scenario gaps, scenario redundancy,
scenario comparability, scenario change, scenario versioning, and
scenario-to-execution traceability.


Operational Scope

SSS applies wherever a simulation must intentionally determine which
conditions are to be examined.


It may govern scenario design for: AI systems, autonomous systems, autonomous
agents, robotics, aerospace systems, spacecraft, mission systems, industrial
systems, manufacturing, critical infrastructure, transportation, digital
twins, financial systems, energy systems, healthcare systems, scientific
models, climate and environmental systems, cyber systems, defense systems,
emergency systems, organizational processes, human-machine systems,
multi-agent environments, and future operational ecosystems.


SSS does not prescribe which domain-specific scenarios are universally
correct.


It governs how a simulation establishes that the scenarios selected for its
specific purpose are sufficiently structured and sufficiently complete.


Simulation Scenario

A Simulation Scenario is a governed configuration of materially relevant
conditions, states, inputs, parameters, events, behaviors, interactions,
constraints, or transitions under which a Simulation Object is examined
through simulation.


Conceptually:

Scenario = Defined Simulation Conditions + Applicable Configuration + Relevant
Variation + Execution Intent


A scenario may describe: one operating condition, one failure, one
environmental state, one behavior pattern, one combination of conditions, one
transition, one stress state, or a complete event sequence.


Scenario Identity

Every material scenario should be sufficiently identifiable.

A Scenario Identity may establish: Scenario Identifier, scenario name,
scenario purpose, relevant Simulation Object, applicable Simulation Scope,
model and environment configuration, relevant Input Set, parameter
configuration, environmental conditions, assumptions, scenario state, intended
variation, and scenario version.


Scenario Requirement

Before scenarios are selected, SSS establishes Scenario Requirements.

A Scenario Requirement answers:

What condition, variation, boundary, uncertainty, interaction, or potential
failure must the simulation be capable of examining?


The requirement exists independently of the exact technical scenario used to
satisfy it.


This distinction supports traceability:

Scenario Requirement → Designed Scenario → Simulation Execution Baseline
Scenario


A Baseline Scenario represents the governed reference condition against which
materially different scenarios may be compared.


Baseline does not mean:

correct reality

or:

most likely future.

It establishes a controlled reference.

Nominal Scenario

A Nominal Scenario represents expected or intended operating conditions.

Nominal conditions may be important for: normal behavior, expected
performance, baseline comparison, and operational-state understanding.


But nominal scenarios alone rarely establish sufficient scenario coverage for
complex or high-consequence systems.


No Nominal-Only Principle

SIMULOS® establishes:

Successful simulation under nominal conditions does not demonstrate adequate
simulation coverage when materially relevant non-nominal conditions exist.


Expected-Condition Scenario

Expected-condition scenarios represent conditions reasonably anticipated
within the intended Simulation Scope.


They may include variation within: normal operating ranges, known
environments, expected populations, expected loads, routine disturbances, or
normal operational transitions.


Scenario Variation

Scenario Variation governs deliberate changes to one or more materially
relevant simulation conditions.


Variation may involve: parameters, inputs, environmental conditions, system
states, actor behavior, timing, resource availability, communication
conditions, failures, or dependencies.


Controlled Scenario Variation

Where comparative interpretation matters, the simulation should identify which
conditions are intentionally changed and which remain controlled.


Conceptually:

Baseline Scenario

↓

Change X

↓

Variation Scenario

This supports determination of whether differences in behavior are associated
with the intended variation rather than hidden scenario changes.


Single-Factor Variation

A scenario may vary one material factor while maintaining other conditions.

This may help isolate sensitivity or causal contribution within the
simulation.


Multi-Factor Variation

Some behavior emerges only when several factors change simultaneously.

SSS therefore allows scenarios involving:

Factor A + Factor B + Factor C

where combined conditions are materially relevant.

No Single-Failure Sufficiency Principle

SIMULOS® establishes:

Testing individual failures does not establish coverage of combinations of
failures where combined failures can produce materially different system
behavior.


Edge Case

An Edge Case is a scenario representing conditions near or beyond the normal
operating distribution, common expectation, typical configuration, or
frequently observed state where simulation behavior may materially differ from
nominal behavior.


An edge case may arise from: unusual inputs, rare environmental conditions,
uncommon interactions, boundary values, atypical behavior, unusual sequencing,
unexpected combinations, or low-frequency events.


Edge ≠ Impossible

A condition should not be excluded merely because it is rare.

The relevant governance question is:

Is the condition materially plausible and consequential within the Simulation
Purpose & Scope?


Rare Scenario

A Rare Scenario may have low occurrence probability while retaining high
consequence.


SSS therefore distinguishes:

Frequency

from:

Scenario Importance.

Consequence-Weighted Scenario Selection

Scenario selection should consider not only:

How likely is this condition?

but also:

What happens if it occurs?

A low-frequency catastrophic condition may warrant stronger scenario coverage
than a high-frequency trivial variation.


Boundary Scenario

A Boundary Scenario examines behavior close to an applicable operating,
environmental, physical, behavioral, or governance boundary.


Examples may involve: maximum load, minimum power, communication limits,
environmental tolerance, control limits, resource exhaustion, operational
envelopes, or response thresholds.


Boundary Crossing Scenario

Where materially relevant, scenarios should examine not only operation near a
boundary but also what occurs when the boundary is crossed.


Conceptually:

Inside Boundary → Boundary Reached →
Boundary Exceeded

The system may behave differently at each state.

Stress Scenario

A Stress Scenario intentionally subjects the simulated system to conditions
beyond ordinary operating variation to determine how behavior changes under
increased pressure or constraint.


Stress may involve: load, resource scarcity, environmental extremes,
communication degradation, timing pressure, component degradation, information
loss, actor density, adversarial behavior, or other system-specific stressors.


Stress Does Not Mean Arbitrary Extremity

Stress scenarios should remain relevant to the Simulation Purpose.

SSS does not require testing arbitrary impossible conditions merely to
maximize scenario count.


Extreme Scenario

An Extreme Scenario represents a materially severe condition at or beyond
ordinary expectations where system behavior or consequences may change
significantly.


Extreme scenarios may be appropriate where: consequence is high, operational
resilience matters, safety margins matter, rare-event behavior matters, or
failure containment is being examined.


Failure Scenario

A Failure Scenario represents the failure of a component, dependency,
capability, resource, interface, actor, process, or environmental condition
relevant to the Simulation Object.


Failures may be:

Single

Multiple

Sequential

Simultaneous

Dependent

Cascading

or:

Common-Cause

where those distinctions matter.

Common-Cause Scenario

Multiple failures may arise from one common underlying cause.

For example:

Power Loss

may simultaneously affect:

Communications + Sensors + Cooling +
Control

Treating the failures as statistically independent may miss the actual
scenario structure.


Cascading Scenario

A Cascading Scenario examines a sequence in which one material event causes or
enables another.


Conceptually:

Failure A → Degradation B → Resource Loss
C → Failure D

Complex systems may fail through chains rather than isolated events.

Sequential Scenario

The order of conditions may materially change the outcome.

Therefore:

A → B → C

may require separate examination from:

C → B → A.

Transition Scenario

A system may behave safely in State A and safely in State B while becoming
vulnerable during the transition between them.


A Transition Scenario therefore examines changes such as: startup, shutdown,
mode change, handover, control transfer, autonomy escalation, environment
transition, recovery, docking, landing, or state switching.


No Stable-State-Only Principle

SIMULOS® establishes:

Testing stable states alone does not establish coverage of transitions between
those states where transition behavior may materially affect outcomes.


Degraded-State Scenario

A Degraded-State Scenario examines operation where the system remains
functional but one or more capabilities, resources, dependencies, or operating
conditions are reduced.


Examples may involve: reduced sensing, reduced communication, degraded power,
limited computation, partial actuator availability, incomplete information,
reduced human support, or degraded infrastructure.


Recovery Scenario

A Recovery Scenario examines behavior after disruption or failure.

It may address: restoration, restart, failover, fallback, state
reconstruction, resource recovery, human intervention, or return to nominal
operation.


SSS governs selection of the scenario.

ORA™ may govern actual Operational Recovery in real-world operation.

Uncertainty-Driven Scenario

Uncertainty identified in upstream SIMULOS® spaces may require deliberate
scenario representation.


For example:

Input Uncertainty Range

may generate:

Low → Central → High

scenario conditions.

Uncertainty should not remain documented while scenario design tests only one
convenient point estimate.


Unresolved-Uncertainty Scenario

Where uncertainty cannot be sufficiently quantified, scenario design may
require alternative plausible states rather than one probabilistic
representation.


Scenario Interaction

Scenarios may interact with: Simulation Assumptions, Input Sets, Environment
Configurations, Parameters, actor behavior, dependencies, and execution
conditions.


These relationships should remain explicit.

Scenario Dependency

A scenario may depend upon another condition being active.

For example:

Emergency Power Failure Scenario

may become relevant only after:

Primary Power Failure.

Scenario dependencies should remain traceable where material.

Scenario Combination

Individual scenario elements may need to be combined.

Conceptually:

Extreme Weather + Sensor Degradation +
Communication Delay

may produce behavior not observable when each condition is simulated
separately.


Combination Explosion

Complex systems can generate an enormous number of possible scenario
combinations.


SSS does not require brute-force simulation of every mathematically possible
combination.


It requires governed determination of which combinations are materially
relevant.


Scenario Prioritization

Where exhaustive simulation is impractical, scenarios may be prioritized
according to factors such as: materiality, consequence, probability,
uncertainty, boundary proximity, dependency concentration, scenario novelty,
known failure history, operational importance, and unresolved governance gaps.


Prioritization must not silently erase excluded material scenarios.

Scenario Selection Basis

Each material scenario or scenario family should have an identifiable
selection basis.


This may include: Simulation Purpose, Reality Representation, Assumptions,
uncertainty, input limitations, model sensitivities, operational states, known
failure modes, boundary conditions, historical events, or defined exploratory
objectives.


Scenario Exclusion

A potential scenario may be excluded where it is: outside Simulation Scope,
materially impossible, non-relevant, duplicative, already sufficiently
covered, or otherwise methodologically unnecessary.


Material exclusions should remain visible where omission could later be
misunderstood as coverage.


No Convenience Exclusion Principle

SIMULOS® establishes:

A materially relevant scenario must not be excluded solely because it is
difficult, computationally expensive, inconvenient, or likely to produce an
undesirable result.


Scenario Feasibility

Scenario feasibility may involve: computational constraints, model capability,
data availability, environment capability, time, physical interface
limitations, or other constraints.


Where a materially required scenario cannot be simulated, the resulting
Scenario Coverage Gap should remain visible.


Scenario Coverage

Scenario Coverage describes the extent to which the governed Scenario Set
examines the materially relevant conditions required by the Simulation Purpose
& Scope.


Coverage may include: normal conditions, variation, populations, environments,
boundaries, uncertainty ranges, failure states, transitions, stresses, rare
events, combinations, and recovery conditions.


Scenario Coverage ≠ Scenario Count

SIMULOS® establishes:

A large number of simulation scenarios does not establish adequate scenario
coverage.


Ten thousand scenarios concentrated in one narrow region may provide weaker
coverage than a smaller scenario set deliberately spanning all materially
relevant condition classes.


Scenario Coverage Dimension

Coverage may be evaluated across multiple dimensions, such as:

Operating State

Environment

Population

Input Range

Uncertainty

Failure Mode

Transition

Stress

Interaction

Dependency

Recovery

or another simulation-specific dimension.

Coverage Matrix

Where useful, scenario coverage may be represented through a multidimensional
matrix connecting:


Scenario Requirement × Condition Class ×
Scenario × Coverage Status

This allows gaps to become visible without reducing scenario completeness to
one numerical count.


Scenario Coverage Status

A scenario requirement may receive a status such as:

Covered

Conditionally Covered

Partially Covered

Not Covered

or:

Coverage Undetermined Scenario Coverage
Gap

A Scenario Coverage Gap exists where a materially relevant condition required
by the Simulation Purpose & Scope is not sufficiently examined by the governed
Scenario Set.


A gap may arise from: missing data, model limitation, environment limitation,
computational constraints, unrecognized scenario need, excluded edge cases,
missing combinations, or incomplete uncertainty coverage.


Coverage Gap Materiality

Scenario gaps should be assessed according to whether the omitted condition
could materially affect: system behavior, outputs, risk understanding, failure
understanding, operational decisions, or downstream validation and reliance.


Coverage Sufficiency

Scenario Coverage Sufficiency asks:

Does the Scenario Set provide enough governed variation and condition coverage
to support the Simulation Purpose without claiming broader examination than
was actually performed?


No Full-Coverage Claim Without Basis

SIMULOS® establishes:

Scenario coverage must not be represented as comprehensive where materially
relevant scenario classes remain unexamined.


Scenario Redundancy

Multiple scenarios may examine substantially the same condition.

Redundancy may be useful for: repeatability, uncertainty exploration, random
variation, or sensitivity testing.


But scenario count should not be inflated through redundant scenarios while
important gaps remain.


Scenario Independence

Two scenarios should not be assumed independent where they depend upon the
same: Input Set, Assumption, environment, failure source, behavioral model, or
dependency.


This may matter when scenario results appear to provide independent
confirmation.


Scenario Equivalence

Two scenarios may be scenario-equivalent where material differences do not
alter the simulation inquiry.


Equivalence should be established rather than presumed.

Scenario Family

Related scenarios may be grouped into a Scenario Family.

Examples may include:

Communication Degradation Family

Power Failure Family

Extreme Environment Family

Autonomous Interaction Family

Scenario families may support systematic coverage without eliminating
scenario-level identity.


Scenario Set

A Governed Simulation Scenario Set is the complete collection of scenarios
approved for a defined simulation campaign or inquiry.


It may identify: scenario identities, scenario families, requirements,
configurations, applicable inputs, variation dimensions, edge conditions,
stress conditions, coverage relationships, exclusions, gaps, priorities, and
execution status.


Scenario Set Version

Scenario design may evolve.

A new Scenario Set Version should be distinguishable where materially relevant
scenarios are: added, removed, modified, combined, reprioritized, or
reclassified.


Scenario Change

Scenario change may be triggered by: new evidence, new input uncertainty,
model change, environment change, discovered failure mode, changed Simulation
Scope, new operational condition, changed assumptions, incident, or new system
capability.


Scenario Reassessment

Material upstream change should trigger reassessment of whether existing
scenario coverage remains sufficient.


No Static Scenario Set Principle

SIMULOS® establishes:

A Scenario Set that was sufficient for one simulation configuration or
lifecycle state must not automatically be treated as sufficient after material
change.


Scenario-to-Input Traceability

Scenarios should remain traceable to the input conditions they consume where
material.


Conceptually:

Scenario → Simulation Input Set
Scenario-to-Parameter Traceability

Where scenarios differ through parameter configuration:

Scenario → Parameter Configuration

should remain traceable.

Scenario-to-Assumption Traceability

A scenario may exist specifically to test an assumption boundary or
uncertainty.


Conceptually:

Simulation Assumption → Relevant Scenario Requirement → Scenario
Scenario-to-Environment Traceability


Environment-specific scenarios should remain connected to the Simulation
Environment Configuration they require.


Scenario-to-Execution Binding

Every Simulation Execution should be bindable to the scenario under which it
occurred.


Conceptually:

Simulation Execution ID → Scenario ID

This allows outputs to remain traceable to the exact conditions examined.

Scenario Reproducibility

Where required, a scenario should be defined sufficiently to permit
reconstruction of the materially relevant conditions under which it was
executed.


Not every stochastic simulation will reproduce the identical output.

But the governed scenario configuration should remain reconstructable.

Scenario Comparability

Two scenario executions may be compared only where materially relevant
differences are understood.


Scenario comparison should distinguish:

Intended Variation

from:

Unintended Configuration Difference.

Scenario Escalation

Scenario execution may reveal a condition that requires stronger or broader
scenario coverage.


For example:

a nominal stress scenario may unexpectedly expose a cascading dependency.

Scenario governance should allow:

Observed Simulation Behavior → New Scenario Requirement → Scenario Set
Expansion


without altering completed historical records.

Scenario Discovery

Not every relevant scenario is known before simulation begins.

SIMULOS® therefore permits scenario discovery during the lifecycle.

Discovered scenarios should enter governance rather than remain informal
observations.


Emergent Scenario

An Emergent Scenario is a materially relevant condition discovered through
simulation interaction, execution behavior, external events, incident
analysis, or new knowledge that was not part of the original Scenario Set.


Scenario Discovery Does Not Erase Earlier
Gap

When an important scenario is discovered later, the architecture should
preserve that earlier simulations did not examine it.


This distinction matters for historical reliance and reconstruction.

Scenario Selection Bias

Scenario design may become biased toward: expected successful behavior,
easy-to-model conditions, familiar failure modes, available data, or scenarios
supporting a desired conclusion.


SSS requires material selection logic to remain visible.

No Outcome-Seeking Scenario Principle

SIMULOS® establishes:

Scenario design must not be structured solely to produce the desired
simulation outcome.


The Scenario Set should remain capable of exposing unfavorable, unexpected, or
contradictory behavior relevant to the Simulation Purpose.


No Data-Convenience Scenario Principle

Scenario selection should not be limited exclusively to conditions for which
convenient datasets already exist where material conditions outside those
datasets remain within Simulation Scope.


No Model-Convenience Scenario Principle

A scenario does not cease to matter merely because the current Simulation
Model cannot represent it sufficiently.


The result may instead be:

Scenario Required — Current Simulation Capability Insufficient Scenario
Capability Gap


A Scenario Capability Gap exists where the simulation architecture identifies
a materially required scenario that cannot currently be represented or
executed with sufficient governance.


The gap should remain explicit.

Scenario Readiness

A Scenario Set may receive a readiness status such as:

Scenario Ready

Conditionally Scenario Ready

Partially Scenario Ready

Scenario Not Ready

or:

Scenario Readiness Undetermined

Readiness applies to progression into governed Simulation Execution. Scenario
Readiness ≠ Simulation Validity


A Scenario Ready status means the scenario basis is sufficiently governed for
execution.


It does not establish: correct execution, valid outputs, reality correlation,
or legitimate operational reliance.


Those questions belong to downstream SIMULOS® spaces and VALIDOS® where
applicable.


Governance Outputs

SSS may produce: Scenario Requirement Register, Simulation Scenario
Identifier, Simulation Scenario Record, Scenario Classification, Baseline
Scenario, Nominal Scenario, Expected-Condition Scenario, Scenario Variation
Record, Single-Factor Variation Record, Multi-Factor Variation Record,
Edge-Case Scenario Record, Rare Scenario Record, Boundary Scenario Record,
Boundary-Crossing Scenario Record, Stress Scenario Record, Extreme Scenario
Record, Failure Scenario Record, Common-Cause Scenario Record, Cascading
Scenario Record, Sequential Scenario Record, Transition Scenario Record,
Degraded-State Scenario Record, Recovery Scenario Record, Uncertainty-Driven
Scenario Record, Scenario Interaction Map, Scenario Dependency Map, Scenario
Combination Record, Scenario Priority Record, Scenario Selection Basis,
Scenario Exclusion Record, Scenario Capability Gap, Scenario Family, Scenario
Coverage Matrix, Scenario Coverage Assessment, Scenario Coverage Status,
Scenario Coverage Gap, Scenario Coverage Gap Materiality Assessment, Scenario
Coverage Sufficiency Assessment, Scenario Set, Scenario Set Identifier,
Scenario Set Version, Scenario Change Record, Scenario Reassessment Trigger,
Scenario Discovery Record, Emergent Scenario Record, Scenario-to-Assumption
Traceability Reference, Scenario-to-Input Traceability Map,
Scenario-to-Parameter Traceability Map, Scenario-to-Environment Traceability
Map, Scenario-to-Execution Binding Requirement, Scenario Readiness Status, and
Governed Simulation Scenario Set.