not efficient in regards that there are many other positive aspects of venturing out and interacting with community. Increased serotonin and feel good emotions of interacting with real people. swiping screens sucks for that. And even if people fail to find a date, which many may do so if were comparing the side conversation of how dating websites have a 80/20 winner take all kind of matching system.... the people who don't find dates may find meaningful friendships and other types or relationships. In the west its sad that 'relationship' is charged with an intimate vibe, there are many other types of relationships humans can create which can be beneficial to ones mental and physical well being.