I started out convinced the answer had to be related to grammar. A colon separates clauses, an ellipsis indicates a pause or omission… the theme felt obvious. I was already leaning toward a guess like ‘forms of punctuation’ when the third clue, Morse code, appeared. That was a major wrench in the works. While it uses punctuation marks, it’s fundamentally a communication system. My theory was breaking down.
I paused and reconsidered. What did a colon, an ellipsis, and Morse code truly have in common? I started thinking about their visual structure. A colon has two dots, an ellipsis is a series of dots, Morse code is made of dots and dashes. The word ‘dots’ felt right. Then clue four, Pointillist paintings, dropped, and it was a perfect, vivid confirmation of my new theory. The connection wasn’t about function, but about form. This realization made the final clue, Lowercase i’s and j’s, feel less like a curveball and more like a satisfying, final piece clicking into place.