It also shows "assisted conversions" for each channel. An assisted conversion means at one point the user arrived at the site through that channel, and they did not convert on that visit but they did convert on a later visit from a different channel. It looks something like this:
Social Media (first visit) > Organic Search > Direct > Direct (conversion)
So what would otherwise be a non-attributable conversion ("direct" could mean several things, none of them useful) can now be attributed partially to Organic Search and Social Media, in this example. How much of the conversion you attribute to those channels is up to you.
If you or anyone else could use some help in evaluating their marketing work using funnel tracking, my contact info is in profile.