"The door was the way to... to...
The Door was The Way.
Capital letters were always the best way of dealing with things you didn't have a good answer to."One of the hardest parts of making a fantasy or science fiction world can be names. Not just for people, but for metaphysical concepts, alien races or awe-inspiring devices/weapons. When writers don't want to make up a new word, they'll often take a short, evocative term and capitalize it. The practice is still so commonplace that J. R. R. Tolkien (who was a language professor at a respected university) decided to use a trick of combining Capital Letters Are Magic with commonplace words from languages he'd made up for fun in his spare time to create all of his fictional-but-now-well-known fantasy names. Here on this site we get a lot of tropes this way as well, such as the The Load and The Dragonnote . In universe, a character may comment on how they can "hear" the Capital Letters. Of course, this is easily explained as proper nouns have inflections, pauses, and emphasis that normal speech does not. Ideally, this will give the concept a simple, descriptive name that doesn't sound too dopey. Unfortunately, this can cause hiccups when they want to use the word in its usual sense, and often leads to eye-rolling from jaded fantasy fans. Alongside ordinary words that take on special new meanings, neologisms are frequently capitalized as well. If fantasy characters talk about smeerps instead of Smeerps, then it may throw the reader off. (Even if these characters are Smeerp farmers who wouldn't think of the animals as "special", and who also ride horses instead of Horses.) Well-established fantasy concepts, such as dragons and vampires, don't get this treatment. It seems that lowercase words feel more orthodox and "official", and it's therefore incorrect for a fictional world to have a "new" one without the characters somehow noticing that something is different. Brand Names Are Better is another example of the effect. After the "magic" has gone away, you get Brand Name Takeover. (The magical new power to copy papers is Xeroxing; years later, the everyday task of copying papers is xeroxing.) Compare The Trope without a Title and We Will Use WikiWords In The Future (when two or more simple words are used in this way). Contrast Call a Rabbit a "Smeerp", which is putting fantastical names to common things. A popular alternative is Phantasy Spelling, though such terms are often also capitalized. The most common way to make a name out of it is to spell it with a "the".
—The Electric Monk, Dirk Gently's Holistic Detective Agency