This may be the first actual Brain Bubble I’ve ever posted! The original intent was to provide a mechanism for sudden (short) thoughts I wanted to record or put out there. But the BB posts quickly turned into mini collections of thought bubbles.
But today I started trying to get into Immanuel Kant (again), and that naturally led to a bit of Wiki Walking.
It was when I got to the article about the subject-object problem that a sudden brain bubble burst!