Somebody Else’s Problem (also known as Someone Else’s Problem or SEP) is a psychological effect where individuals/populations of individuals choose to dissociate themselves from an issue that may be in critical need of recognition. Such issues may be of large concern to the population as a whole but can easily be a choice of ignorance by an individual.

Author Douglas Adams’ description of the condition, which he ascribes to a physical “SEP field,” has helped make it a generally recognized phenomenon. Somebody Else’s Problem used to capture public attention on matters that may have been overlooked and has less commonly been used to identify concerns that an individual suffering symptoms of depression should ignore. This condition has also been employed as trivial shorthand to describe factors that are “out of scope” in the current context.