Some people experienced identity crises, feeling that their sense of self was undermined by the countless parallel versions of themselves. A few bought multiple prisms and tried to keep all their parallel selves in sync, forcing everyone to maintain the same course even as their respective branches diverged. This proved to be unworkable in the long term, but proponents of this practice simply bought more prisms and repeated their efforts with a new set of parallel selves, arguing that any attempt to reduce their dispersal was worthwhile.