Because Brown and Eisner did not specify whether or not the receiver would benefit, the original definition of allomone includes both substances that benefit the receiver and the emitter, and substances that only benefit the emitter.
Como Brown e Eisner non especificaron se o receptor se beneficiaba ou non, a definición orixinal de alomona incluía tanto substancias que beneficiaban ao receptor coma ao emisor, coma substancias que só beneficiaban ao emisor.