"Jōsekis" are not fixed but comprise patterns that have gained acceptance in professional games; they constitute a consensus that may change with certain caveats. Hence, the basic definition may be misleading for new players in that a "jōseki" can be misconstrued as foolproof and unalterable and as optimal for all situations. Many "jōsekis" are in fact useful only for study within an artificially confined corner, and in real play are only considered good form when used in proper combination with other plays on the board (i.e. other "jōseki" and "fuseki" moves).