One good thing about case sensitivity in article URLs is when there are two separate
articles: one about a subject in general (a state fair is an exhibition of agricultural
products), and another about a particular person, place or thing having the same name
(State Fair is a musical by Rodges and Hammerstein).
Here are some more examples:
* A ring bearer carries the wedding ring up the aisle vs. The Ring Bearer in Tolkien's
book.
* A big brother as a family role vs. Big Brother (the 1984 bad guy or 1990s TV show).
Yes, any of these can be disambiguated with parentheses into their separate articles, or
they can be lumped into a single page. But it's easier in enough instances to use case
sensitivity, I think.
Ed Poor