Rand Fishkin, Moz. The older I get, the less sure of myself I become. Certainty, it seems, diminishes with age. Hopefully, that’s part of the “wisdom of the aging brain” as Nautilus described it. This week, at Business of Software Europe, I was asked to give a talk on this topic, and created a short, visual set of slides. Typically, I put those on my Slideshare and have enough detail in them to be useful, but this presentation is an exception and, as such, I’ve instead opted to turn the talk into a blog post. More at www.businessofsoftware.org