Any physical entity is quantum information: and thus: mathematical!

1. Quantum information can be discussed as the counterpart of action.

2. Quantum information is what is conserved, action is what is changed.

3. The gap between mathematical models and physical reality, needing truth as adequacy to be overcome, is substituted by the openness of choice.

4. That openness in turn can be interpreted as the openness of the present as a different concept of truth recollecting Heidegger’s one as “unhiddeness”.

5. Quantum information as what is conserved can be thought philoso[hically as the conservation of that openness.