To reply in reverse order - I see how it's relevant to skepticism because people are quick to believe any old thing that feels truthy to them. But there are some things you actually can put your trust in. Things that have been born out over centuries to get us closer and closer to true knowledge, things that produce real results. Things such as empiricism. You can eventually come to trust empiricism, rationality, the experimental method. You don't have to remain forever entirely skeptical of everything. In that sense it's a decent metaphor to compare it to... (read more)