Simon and Lloyd were involved in the early stages of this experiment, but it fell into the wrong hands somewhere along the way. Perhaps into China's, North Korea's, or terrorist's hands. The "us" Simon says Lloyd's been avoiding is the original group of scientists who developed this new technology capable of tampering with human's hippocampi. Simon, already revealed to have questionable ethics, was the prankster/black sheep in the research group that soon became the mole that leaked the information to the outside for a substantial amount of cash, or some less tangible compensation.