His engrams were altered to such a degree that he was rendered undetectable telepathically. Bad or painful experiences were stored as what he called "engrams" in a "reactive mind". Hebbian theory concerns how neurons might connect themselves to become engrams. These engrams are named Implants in the doctrine of Scientology. Experiences such as these, stored in the "reactive mind" are dubbed "engrams". Hubbard claimed that these engrams are the cause of almost all psychological and physical problems. When the eScape shut down, Arno salvaged these digital engrams. Through auditing, people can solve their problems and free themselves of engrams. Scientology believes that watching for changes in the E-meter's display helps locate engrams. This technology was developed to create smart computers by transferring human engrams into computers. Players could also earn Solstice Engrams, which also granted new rewards. Players could earn Crimson Engrams, granting new rewards. This enabled engrams to be "cleared". He also claimed that "the atheist is activated by engrams as thoroughly as the zealot". There is no mention of evil psychiatrists, mind control, engrams, etc.