Using the original "V" hand sign for peace as an inspiration, this "vis-à-vis" hand sign is two letter P's from the American Manual Alphabet. Unlike the original peace sign, the vis-à-vis double-P sign requires two people to execute, and can be used as a greeting of peace. The "P" can stand for the word peace, and the two "P's" indicate an elevated level of peace; i.e., "peace squared." In addition, "P.P." can also be an acronym for "Pan paniscus," the scientific name for the bonobo, the more peaceful cousin of the aggressive chimpanzee. Unlike chimps, bonobos solve their problems by having sex. This vis-à-vis double-P sign, because it is a hand sign, can also be used to communicate with great apes.