Mathematics and the Universe

[Purple Rabbit]

In QM also every observed event has a precursor which causes it.

That's not entirely true: quantum tunnelling (inc. radioactive decay), vacuum energy, etc, do not have precursor events. They are truly spontaneous.

True. That's why I introduced the Casimir effect in the first place. There are certain random type events, like the virtual pair creation that causes the Casimir effect. What I meant is that QM didn't do away with causality for a wide range of event types. For nuclear fission, star formation, chemical processes and many other event types, physical causality is an essential part of the current picture on physics.