The physicist who made an argument with Enrico Fermi against the existence of extraterrestrial civilizations has described himself as what?
Fermi paradox The Fermi paradox or Fermi's paradox, named after physicist Enrico Fermi, is the apparent contradiction between the lack of evidence and high probability estimates, for the existence of extraterrestrial civilizations. The basic points of the argument, made by physicists Enrico Fermi (1901–1954) and Michael H. Hart (born 1932), are:
Dirac fermion In physics, a Dirac fermion is a fermion which is not its own antiparticle. The vast majority of particles fall under this category, as they are not their own antiparticles, and in particle physics all fermions in the standard model, except possibly neutrinos, are Dirac fermions. They are named for Paul Dirac, and can be modeled with the Dirac equation.