Ask this guy, bet he knows :-)A bit more seriously, the "new" matter isn't really new, is it? It's just matter/energy that has taken on a new "phase" and carries along all the history that was trailing along in the energy, right?For that matter, if the wave from an object 1 billion light years away interacts with it, that wave is from the past, not future, right?And finally, you are making radiation into something volitional. I don't see how that's valid.

Ask this guy, bet he knows :-)

Your example is just an artefact of classical electrodynamics being deterministic and reversible. So if you know the final state rather than the initial state you can play the tape backwards. This doesn't mean you can physically break causality. What determines whether the retarded or advanced solution should be used is the boundary values. If you have the initial values of the electromagnetic field and the initial particle positions, you use the retarded one. If you have a final value, you have to run the tape backwards to compute the field values and particle positions before that, and here you use the advanced solution.What Wheeler-Feynman theory really states is that any process that emits a photon is equivalent to a process that absorbs one if you play everything backwards. It looks at the special case where the future boundary values are forced to be zero(or whatever else it ends up being, which you may mathematically keep fixed to make the problem homogeneous). Since this is a future boundary condition, it isn't surprising that values seem to be determined by future events.