Safe to fail experiments have a direction rather than a destination as this enables parallel experimentation. The most effective experiments are performed at the edges of a system, as the centre is harder to change.
An experiment that is safe to fail is small and self-contained. This limits the negative effects of the experiment (intentional or unintentional) but also provides a tight feedback loop that can be incorporated quickly into future rounds of experimentation - as Fast feedback improves quality this can manifest as stepwise evolution towards a lower-complexity state ("nudging").
To create psychological safety, Experiments must be safe to fail.
A successful environment for deliberate practice is one where Experiments must be safe to fail and where feedback is plentiful, as Fast feedback improves quality.
Experiments must be safe to fail
To allow for Experiments must be safe to fail