Editorial standards

Simulations4All publishes interactive educational models and engineering tools from Calgary, Alberta. Editorial responsibility belongs to Simulations4All. These standards describe our review process; they do not certify every result in the catalogue.

How simulations are built

A model starts with a defined question, governing equations, units, input ranges and stated assumptions. Its guide should explain what you can change, how to interpret the output and where the model stops being useful. Source changes and corrections are kept in version control.

References and validation

Our standard requires an independent reference for each applicable output: a published example, a recognized standard or an independently derived result. Repeating the implementation’s own formula checks transcription, but does not establish independent verification. Missing or unavailable source evidence must remain marked as pending. Existing references are displayed on simulation pages; a reference list alone does not prove that every output has been checked.

Testing and verification views

Regression checks cover numerical examples, units, boundary conditions, invalid inputs and relevant failure cases. Interface review includes controls, readable labels and visual fit at different screen sizes. Coverage varies across the catalogue: consult the page’s stated limitations and verification evidence rather than assuming a universal pass.

Open Tools provide guides and, where available, runnable verification views. For example, the Gearsmith verification view shows reference checks you can run in your browser. Read each case’s basis, citation, tolerance and source status. A passing check supports that case within its scope; it is not a certification for professional use. Explore the Open Tools catalogue for guides.

Corrections policy

Report a suspected error through our contact form. Include the page URL, inputs, observed result, expected result and a reference or reproducible example when available. We investigate reports, correct confirmed defects in source and add regression coverage where applicable. An unresolved check should be described as unresolved rather than presented as verified. We do not promise a fixed response time.

Public modification dates track material changes to a page’s model or guide. Search titles, description metadata and author-label corrections alone do not make a model newly validated. Educational outputs require independent judgement before professional, financial or health use.

Read more about our methodology.