I think the article would be better titled "why intentions sometimes pan out differently." If I look back on every decision I made, would I make them the same way now? No, but those decisions and events made me who I am today. Can I be certain the opposite decision wouldn't be similarly looked at as "wrong" in hindsight? As a bald person, I think your analogy is a good one. Ask a person with a full head of hair if baldness is unfortunate, and many will say it is. Ask a person who's been bald for fifteen years if their baldness impacts their life (beyond protection from the sun), and I expect most won't even remember they're bald until you ask. I wouldn't. And I think the same is true of many decisions an outside observer might call "mistakes." If one likes who they are after a marriage dissolves, is it fair to say they married the wrong person? I don't think it is.