That's not a typo. For you alert proofreaders, it's a play on words; like going off on a tangent or rant, but in a good way. It's also a theory, of which I have many. This one tries to answer the age-old rhetorical fishing question "Why does the late fall bite get hotter as the water gets colder?" Going out on a limn is like going out on a limb except even more of a metaphorical force. Bear with me while I try to 'splain it and milk it for a column. Limnology is the scientific study of lakes and other bodies of fresh water, including their physical and biological features. Then there's the root word, limn, which means to describe something in words, which may not call for a limnologist, but someone willing to go out on a limb, or a limn, on a whim, with my cold water/hot bite theory. Fish don't get to be big fish by falling for everything that comes down the pike.