Elisha Goldstein’s book, The Now Effect, has sent my brain spinning in yet another direction.
A professor stood before a philosophy class holding an empty jar. As the students took their seats, she began filling the jar with golf balls. When they reached the top, she asked the students if the jar was full. They agreed that it was. The professor then took a bag of pebbles and poured them into the jar, and they made their way between the spaces of the golf balls. Again she asked the students if the jar was full, and they agreed that it was.
But the professor had another trick up her sleeve. She brought out a bag of sand and proceeded to pour the grains into the jar, filling up more of the remaining space. Again the question came: “It’s full now, correct?” The answer was a resounding “Yes.”
The professor then took a sip of her coffee and dumped the rest into the jar, filling up spaces that no one thought was there.
The thought: how does our brain process negative space?