Error is often the result of laziness or an obsession with perfection.
It’s obvious why laziness would cause errors. But being obsessed with perfection is less obvious. An example would be an attempt to create a utopian society. Or a religion that claims to have all the answers.
People involved in such pursuits aren’t lazy. They’re often very energetic and driven. The problem is that they tend to see the world in black and white terms. They leave little room for nuance. They tend not to see things the way they are, but the way they want things to be. They’re obsessed with the idea that there are perfect solutions and that they have found those solutions.