Poly, do you believe that if all logical possibilities are actualized somewhere, that it's logical for different dimensions to interact with one another?
Because if your ontology is correct and they CAN interact with one another on top of that, then shouldn't there be a machine which is geared towards observing us for a signal that we can provide it such that it responds in an observable way (since, ostensibly, such a machine is logically possible given the premises and all logically possible things are actualized given the premises)?
i.e., shouldn't there be a machine geared towards looking at me for raising my hand such that it interacts with my part of the universe in an observable way (e.g., rearranges atoms on my desk to become a pink bust of Micky Mouse)? the fact that I can't interact with ostensibly possible extra-dimensional machines must mean that either not all logical possibilities are actualized or that interaction between dimensions is limited, no?