One of Amanda Gefter’s favorite physicists was John Wheeler, and in her book Trespassing on Einstein’s Lawn, Gefter quotes him numerous times and describes the impact that Wheeler had on her life. What made Wheeler different from other physicists, what entranced Gefter with his work, was his often poetic way of describing the universe and interpreting what the mathematics of the universe told us. In a world of complex physics, daunting mathematics, and mind bending conclusions, Wheeler’s voice cut through with simplicity and his poetic style was elegant yet clear and inviting.
One part of Gefter’s book describes a trip she took with her father to Philadelphia to look over Wheeler’s old notebooks after he passed away in 2008. At the American Philosophical Society, Gefter and her father poured over his old notebooks, studying his thoughts, the progression of his studies, and analyzing the conclusions he reached along the way. One of his annotations in a notebook was included in Gefter’s book, and I think it does an excellent job illuminating Wheeler’s poetic style and what it was that drew Gefter to his writing, speaking, and way of describing science.
“Still,” Gefter writes, “Wheeler was lost. ‘Not seeing a dramatic clear path ahead,’ he wrote. ‘Now have concluded just have to push in through the undergrowth. ‘Traveler, there are no paths. Paths are made by walking.’”
In his personal notebook, describing what appeared to be a dead end in his research, Wheeler turned to a phrase we have probably heard before, but probably not in our science classes. Wheeler was pushing the edge of scientific thought, and he had come to a point where he could no longer rely on the research of others to show him the path forward. The quote was used to describe propositions, yes/no or true/false statements about some reality. Wheeler, like Gefter years later, was searching for some truth to the universe that was not observer dependent, that did not need to change or adjust based on a observer’s position, speed, or quantum composition. Propositions seemed to be a place to start, but even there, the dreaded sentence, “this sentence is false” seemed to break even propositions and seemed to pull apart any basic form of reality.
Altogether this short section from Gefter, the lessons she shared about Wheeler, and the scientific challenge which served as the genesis for Wheeler’s note teach us a few things. Often times we want a dramatically clear choice in our life, but for each of us, the path has not been made. We must push through the undergrowth of life, creating our own path as we go. We must abandon expectations of how things should be and how things ought to turn out for us, because there is no solid truth that we march toward. We are not pushing forward in the universe and in our lives to an inherently perfect and true destiny. The reality we find as we cut through the undergrowth is as observer dependent as gravity and time. How we choose to see it depends on our reference frame, and our reference frame is something we have some choice in. And while we are using that choice, we can be boring, stuffy, and self pitying, or we can be inventive, flourishing, and excited for the new discoveries that know will lie ahead of us.