Getting an early jump on the collaborative, open-minded spirit of Yield, Stone Gossard’s Pearl Jam vocal debut on “Mankind” took fans and radio stations by complete surprise in 1996. A punk-pop nugget featuring the rhythm guitarist’s deadpan yowl, many die-hard fans are still unsure what to make of it. Many are baffled by wordplay such as the Listerine/Ovaltine rhyming or just what it means to dip one’s battleship, but the song fits perfectly on the eclectic No Code, and if nothing else, provides Stone with an excuse for some wry banter at the occasional show. A loose, groovy (ha!) examination of the nature of influence and imitation, “Mankind” further lends it album a sense that anything is possible.