It does seem fitting to construe carelessly made, shoddy goods as in some way analogues of bullshit. But in what way? Is the resemblance that bullshit itself is invariably produced in a careless or self-indulgent manner, that it is never finely crafted, that in the making of it there is never the meticulously attentive concern with detail to which Longfellow alludes? Is the bullshitter by his very nature a mindless slob? Is his product necessarily messy or unrefined? The word shit does, to be sure, suggest this. Excrement is not designed or crafted at all; it is merely emitted, or dumped. It may have a more or less coherent shape, or it may not, but it is in any case certainly not wrought.