It's articles like this one about Shakespeare's experience at sea that I really enjoy.
Simple premise -- Shakespeare didn't know how much time was meant by the nautical concept of a 'glass'.
Evidence -- passages from The Tempest and All's Well That End's Well seem to indicate that he thinks it means one hour, when actually it means half an hour.
Conclusion -- Shakespeare never went to sea. Or, at the very least, he was not an experienced sea-traveller. (They do offer up the possibility that he travelled once in his life and simply forgot the specifics of the term over the years).
Real conclusion -- <em>For believers in “alternative Shakespeares”, the sea-glasses are more of a crux. The 17th Earl of Oxenford and Sir Henry Neville, to take two popular current candidates, each crossed to the continent several times. Oxenford, according to his partisans (though non-Oxenfordian scholars disagree), even sailed with the English fleet opposing the Armada, subjecting himself to the discipline of a sailor.</em>