[3] In 1992, he became lecturer in mathematical physics at Maynooth College, part of The National University of Ireland.
[4] Hardy is now affiliated with the University of Waterloo and is among the faculty of the Perimeter Institute for Theoretical Physics.
[4] In 1992, Hardy published a thought experiment that "makes nonsense of the famous interaction between matter and antimatter" — that when a particle meets its antiparticle, the pair "always annihilate one another" in a burst of energy.
But since the interaction has to remain unseen, no one would notice this happening, which is why the result came to be known as Hardy's paradox.
His proposal represented an "operational" approach made famous by Albert Einstein, but applied to quantum mechanics.