In all seriousness I realize you are joking.
Actually only about 12% joking. Part of it is that I've learned to be more-than-slightly-careful about the things I say. I usually *know* the stuff I don't know and I leave that to someone else to figure out, or go figure it out myself before I actually say something about it. Knowing when not to say something is a fairly well-practiced skill. You've seen me for years. I tend to make carefully qualified statements, because I usually know where the edges are. For example, I don't talk much about CIFS and Windows permissions.
I've spent years consulting, a job I would largely characterize as "frequently having to tell clients the things they desperately don't want to hear." In that role, you cannot be wrong, so you always know why you're right. It usually doesn't make you the popular guy. It sucks to be always right. I say that more wryly than anything else. I don't hang around here because I'm a ZFS n00b.... I'm here mainly because I enjoy the crowd here, and because I like to show some appreciation for the work iX has done in the form of providing some tech support. The things I say, especially around here, aren't likely to be wrong.