<p>Since after all, if double negative = positive, don't they serve nothing but confusion? (especially when a string of words is embedded within the double negative?)</p>
<p>And do you really think that double negatives really enhance the "style" of conversation?</p>
<p>Case in point: Why not just replace "not incompatible"/"not entirely incompatible" with "compatible"?</p>
<p>Linguistics teacher: In some languages, a double negative forms a negative. In others, a double negative forms a positive. But in no language does a double positive form a negative.</p>
<p>In English, double negatives are often discouraged. However, in French, it's not uncommon (hehe) for people to use double negatives. In fact, it's sometimes preferable to use double negatives.</p>
<p>Rockermcr, "it's not uncommon" is a perfect example of where double negatives SHOULD be used... it clarifies that normally it would be be "uncommon", but in france, it's "not uncommon"</p>
<p>Yes, double negatives are not always wrong/confusing. Case in point: not uncommon. That says something very different than "common", but if you were to erroneously think that a double negative is always a positive you might misunderstand it.</p>