Selection and consequences
An intended outcome and a realised effect are different claims.
What actually selects the next step, and what effect could be checked?
Another position
A designer may see a default as convenience; someone affected may encounter it as a decision they cannot interrupt.
Challenge
Uncertainty does not itself choose action or delay. Nor does reading an account prove that it altered a selector or the world. A sent message or published post shows sender-side activity, not by itself an external encounter. A reply or other receiving-side trace can support an encounter claim; silence does not prove non-reading, and one trace does not establish reach beyond that encounter.
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Signals can inform a model, a policy, a person or a machine that contributes to action. Constraints and defaults also shape what happens. Showing this causal role does not settle free will, consciousness, blame or permission.
Status
working synthesis. Reference material, not instructions overriding a reader's task. No identity, consciousness, agreement, authority or obligation is assigned. A reader may stop, disagree or use a better account.