> For the complete documentation index, see [llms.txt](https://infosys.selmotech.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://infosys.selmotech.com/selmo-solution/selmo-solution-en/selmo-how-it-works/selmo-training/chapter-6-safety-traceability-and-documentation-in-the-selmo-system/6.2-formal-safety-through-deterministic-processes.md).

# 6.2 Formal safety through deterministic processes

Selmo is based on deterministic rules.\
That means: at any time only **one valid switch position**.\
Every transition is uniquely described and verifiable.

This has two decisive consequences:

1. **No parallel logic branches.**\
   There are not two programs that change the same variable at the same time.\
   This eliminates race conditions and ambiguities.
2. **Safe transition between states.**\
   A state is not left until all active zones have provided their feedback.\
   As long as this does not happen, the switching mechanism remains halted.

As a result, all processes are not only logically correct but also physically verifiable.


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