[manbearpig]

Why should the Goldbach Conjecture be included? Just because a problem's formation is easy for many people to understand doesn't mean it is an easy problem that should have been solved. The Goldbach Conjecture would be better classified as what that blog calls a 'mathematical disease', a legitimately difficult problem that infects the attentions of many mathematicians. I'm not sure the Goldbach would even qualify for this because I feel like it's famous more for attracting the attention of pseudomatheticians than genuine ones.