Having multiple different types touchpoints increases likelihood of conversion. If you see something on TV, then overhear people talking about it on the street

Having multiple different types touchpoints increases likelihood of conversion. If you see something on TV, then overhear people talking about it on the street, then see it on FB, you're much more likely to buy it. Even though each signal is weak and unreliable (and even together they still probably don't mean much) the connection in your brain is more robust.