Minor rearrangement / rephrasing of the sentence is another common way to fix the problem. E.g. in this case, changing "it is" to "it's" on the previous line m

Minor rearrangement / rephrasing of the sentence is another common way to fix the problem. E.g. in this case, changing "it is" to "it's" on the previous line may have been enough to pull "stating" up a line, solving the immediate issue. Of course, this may cause a number of other overfull h-boxes later on. While I understand why the problem exists, it really is one of the most perplexing issues with LaTeX, since it completely breaks through that layer of encapsulation that's supposed to be provided for you (i.e. you now care about specifics of the layout, which was supposed to be handled for you by the system).