Do Inbound or Social Media Marketing Campaigns Work on Their Own?

Many marketing leaders are trying to create inbound or social media campaigns that will produce amazing marketing results that can grow rapidly.  My guest, Louis Gudema, the author of the book Bullseye Marketing and a Fractional CMO, makes that case that investments in inbound or social media marketing rarely produce results by themselves. He argues that it takes a multi-channel approach to reach your market place since 95% of your potential customers are not even considering buying today.  The most effective marketing programs have a mix of short term tactics, intent based campaigns, and long term strategies that engage buyers at every level. Do you have an effective multi-channel strategy or are you relying on one channel to drive all of your results?