In epistemology the problem of the external world is the challenge of proving that I know that entities exist other than me. Even if it is assumed that there is an external world, there remains the problem of other minds: the challenge of proving that I can know that there is at least one other being that has a mind. A common version of this problem tends to assume other beings exist, and the challenge is to prove that I can know that these other beings have (or lack) minds. Our good dead friend Descartes offered the best-known effort to solve the problem of the external world and in trying to solve this problem he also, perhaps unintentionally, attempted to solve the problem of other minds.

In his Meditations Descartes set out to create an infallible foundation of knowledge starting with his method of doubting his beliefs until he found a belief he could not doubt.  As part of this project, he hoped to solve the problem of the external world. After his doubting spree in the first Meditation, he took his belief that he thinks and the belief that he exists to both be certain and indubitable.  In trying to prove that something exists other than him, Descartes attempts to prove that God exists. And so, he attempted to solve the problem of the external world by solving a version of the problem of other minds. Proving that God exists would prove that another mind exists and that something exists other than him, thus solving a limited version of each problem.

While Descartes grinds through a plethora of proofs, his key reasoning for the purposes of this essay is his notion that the cause of a belief must contain as much reality as the belief itself. Roughly put, you can think of this reasoning as analogous to inferring that whatever charged a mobile phone battery must have at least as much power as in in the battery (assuming the battery charged from zero). Descartes based this reasoning on the principle that something cannot arise from nothing.

Roughly put, Descartes claimed that his idea of God is such that he could not be the cause of this idea—it had to be caused by something external to him. For example, Descartes notes that God is perfect and argues that he could not get the idea of a perfect being from his imperfect self. As another example, Descartes claims that God is infinite and that he (Descartes) could not create the idea of infinity from himself. From this he infers that God exists. He then goes on to argue that since God is perfect it follows that God is not a deceiver. Descartes then concludes that since God created us, we can generally trust our senses and thus we can infer that there is an external world. While this does not address the common version of the problem of other minds, it does offer a solution to the narrowest version: it does attempt to show that Descartes is not the only mind. In philosophical terms, success would refute solipsism. That is the philosophical view that I am the only being in existence. Or, alternatively, it could be taken as the view that I am the only mind (thinking being) that exists. While I think that Descartes’ efforts failed, his attempted solution to the problem of other minds provides a model that I will steal. My goal is modest: I am not trying to prove that other people have minds, I am just endeavoring to show that there is at least one other mind. I will do this with an aesthetic argument that was inspired by the combination of watching Wandavision and teaching Epistemology via Zoom during the last pandemic.

While teaching my Epistemology class at squares on Zoom I mentioned Wandavision as an example and had the realization that the quality of the show could be used to argue for the existence of other minds. While Descartes argued that the cause of an idea must equal or exceed the reality of the idea, I will replace this with the principle that the cause of an idea must equal or exceed the quality of the idea in terms of creativity. As such, to show that something exists other than me, I just need to find an idea (or ideas) whose content exceeds my own creativity. That is, I need to find ideas that I could not create. This is extremely easy.

Wandavision, the show that inspired this argument, exceeds my creative abilities as I lack the skill and talent to write such a series. I can obviously say the same about many other movies, books, and stories since they are beyond my skill to create. As a writer, I am aware of the limits of my abilities and can safely draw these conclusions. I can also add other art, such as music and drawing. I know my skills at music (none) and drawing (very limited) and know that I lack the ability to create most works I have heard or seen. Since I could not create such works, there must be at least one other mind that is creating them. There might be only one other mind and it could be electing to create works of varying degrees. Or there might be many other minds creating these works. This does not, of course, show that there is an external world of the sort I think exists. It could be (as Descartes considered) just me and one other being who is causing all these ideas in my mind. While I would condemn the deception, I must thank them for the high-quality work they create for me. As such, I can infer that at least one other mind exists and that I am not alone. But there are, as always, counter arguments.

One obvious counter argument is that I have an unknown talent or skill that allows me to create without being aware I am doing so. That is, I cannot consciously create things of such quality but can somehow do so without being aware I am doing it. One could point to dreams as an obvious example of how this might work: the best explanation for dreams is that their content comes from me although I (usually) lack conscious control. My reply is to point out that my dreams do not match the quality of the works I encounter in the waking world in terms of the stories. Any art I see or music I hear in my dreams are always mere copies from when I am awake (or think I am awake) or of low quality. As such, I would seem to lack such a hidden and unknown faculty of creativity. I do agree it is not a logical impossibility that I have such a faculty, but there is no evidence for its existing beyond explaining my aesthetic experiences without any other mind existing, which would be ad hoc.

A second obvious counter is to allow that something exists other than me, but this is not another mind. That is, the aesthetic experiences are created in a “mechanical” way without the sort of thinking that would be done by a mind. To use an analogy, this would be like having an AI creating content without having a mind. There are two responses to this. The first is that this would still entail that I was not the only being in existence as there would also be this creator entity. The second is that such a high degree of creativity would seem to require a mind. It would pass tests analogous to the Turing test and thus it would be reasonable to infer there is at least one other mind behind these creative works.

In closing, there are two main possibilities. The first is that I alone exist, and I have an unknown faculty of creativity that vastly exceeds my known skills and talents (and I can never consciously use these hidden abilities). The second is that at least one other being exists and is creating these works that are beyond my skill.