Kimmo,
I absolutely agree we should save ourselves from our own stupidity and that antimatter seems to need treating with the utmost caution. But which antiparticles? Do we have any idea? or is it suck-it-and-see, so when we're destroyed we can say; "Aha that was the little blighter! dammit..."
I also agree that at least fermions propagate in particle/anti-particle pairs. Are positrons then dangerous? We've found them often and haven't had problems. In my favourite models (and papers) they propagate en-masse and most quickly annihilate (as opposing vortices) across the Debye length ('charge cancellation').
However (Discrete Field Model) a few join up tip to tip, closing to creating the toroid EM field - and there goes the neighbourhood as all sorts of things get bound up and 'matter' litters everywhere! So we may nor be here without antimatter! But is there really another type which can annihilate protons etc en masse?
I'm not a fan of suck-it and-see. Curiosity killed Schrodingers budgerigar! Great essay, we need a few warning shots to wake us up. Binary rating time I think. I note you also reject action at a distance. Great! You'll love my essay, I hope (I need the points) Classical proof that it's not required, and understandable! (by most).
Well done, and best of luck.
Peter
