We know what a neutron bomb is... yet to my knowledge one has never been set off. For all we know it could rip a hole in the thingy we like to call
the space time continumumum.
Ummm..sorry but you are WAY off there. First, there
have been neutron bombs made and tested, starting in the 1970's during the cold war.
Russia was known to have a belt of neutron bombs all along their buffer countries to deter US forces from invading by tank. About ripping a hole in
the spacetime continuum, that's just impossible with these things. Like was said above, a neutron bomb just emits a huge mass of neutrons that
destroy all organic life. But I can see where its confusing, as an atom bomb involves the splitting of an atom...