What makes some start-ups succeed where others fail is so poorly understood that superstitions start to creep in -- such as this one: that a co-founder is neede

What makes some start-ups succeed where others fail is so poorly understood that superstitions start to creep in -- such as this one: that a co-founder is needed. It's widely believed and utter nonsense. Worse, it leads people to find co-founders artificially and to accept a co-founder when they would be much better served going it alone. When you add a co-founder, you might have increased your chances of success but you certainly have increased your chances of failure.