> Agreed, but the main point still stands: there can definitely be factors outside of our knowledge and control which we will simply not be aware of until it is

> Agreed, but the main point still stands: there can definitely be factors outside of our knowledge and control which we will simply not be aware of until it is too late. There are always such factors. Take the choice whether to have a child. Said child may be the next Hitler, so clearly it's wrong to have a child. But wait, said child may be the person who stops the next Hitler, so there's almost an obligation to have said child. Pointing out that there are unknowns is useless. More to the point, it isn't an argument for or against anything because it applies just as well to all options.