Lloyd Pye is at the forefront of research into human origins from alien sources. His Intervention Theory proposes that human DNA is not of this world.Lloyd Pye is at the forefront of research into human origins from alien sources. His Intervention Theory proposes that human DNA is not of this world.Lloyd Pye is at the forefront of research into human origins from alien sources. His Intervention Theory proposes that human DNA is not of this world.