let' look at real exampleand it'll make little bit more senselet' say that this nice lady in the preceding image watched star wars and the empire strikes back and she loved them both sowe have user vectorof this ladygiving -star rating to star wars and the empire strikes back let' also say mr edgy mohawk man comes along and he only watched star wars that' the only thing he' seenhe doesn' know about the empire strikes back yetsomehowhe lives in some strange universe where he doesn' know that there are actually manymany star wars moviesgrowing every year in fact we can of course say that this guy' actually similar to this other lady because they both enjoyed star wars lotso their similarity score is probably fairly good and we can sayokaywellwhat has this lady enjoyed that he hasn' seen yetandthe empire strikes back is oneso we can then take that information that these two users are similar based on their enjoyment of star warsfind that this lady also liked the empire strikes backand then present that as good recommendation for mr edgy mohawk man we can then go ahead and recommend the empire strikes back to him and he'll probably love itbecause in my opinionit' actually better filmbut ' not going to get into geek wars with you here