Q: your  framework assumes the notion of apparatus external to the system, eg a screen: can you address description of the whole cosmos? can you define when events occur–in the Bellian sense?
A: (not caught)Q: surely issues are well controlled by assuming that tau is a monotonic smooth function of time t? A: yes, but the framework is intended to be general.Q: Dirac observables are not all that one can observe, as my talk will show! Pashby looks forward to the questioner’s talk