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Aula universitaria con exámenes en papel sobre los pupitres y una laptop cerrada apartada a un lado
Imagen alusiva: pupitres con exámenes en papel y una laptop cerrada, en un aula universitaria vacía.

Berkeley returns to paper: a Fields Medalist stops grading online

Richard Borcherds, a Berkeley mathematician and Fields Medal winner, abandoned online grading because he cannot distinguish human work from work generated by…

--- The context --- Richard Borcherds, a mathematician at the University of California, Berkeley, and a Fields Medal winner known for his research on infinite-dimensional algebras and quantum field theory, concluded that online assessment no longer measures what his students know: artificial intelligence delivers the correct answer in seconds and the remote exam rewards whoever uses it. --- The facts --- According to Borcherds, online exams became a waste of time because several students use artificial intelligence to answer the questions and he cannot tell which ones do, although he notices that the average score rises sharply in that format. Faced with the impossibility of distinguishing human work from machine-produced work, he abandoned online grading of his mathematics students' exams and assignments. His answer was to return to traditional paper exams, with no electronic devices. And lacking a better alternative, he acknowledged that he currently grades assignments simply because the student turned them in, without evaluating their content: he admitted it is not a very good system, but that he has no other viable option for now. --- The positions --- Borcherds said grading for correctness adds an enormous incentive to use artificial intelligence on assignments instead of doing them, because it guarantees a correct answer, and that it penalizes honest students. In his account, paying to grade machine-generated answers is a waste of time and money. The institution looked for another way out: Berkeley evaluated content detection tools such as Turnitin and Rumi and concluded that none was reliable enough for standardized implementation across campus. --- What remains unknown --- The Berkeley Division of the Academic Senate asks faculty to include in their syllabi a statement on the permitted use of artificial intelligence tools, although concrete policies are left to each professor and vary by level and subject area. Anne Marie Richard, associate vice provost for Undergraduate Education and director of Academic Technology, pointed out that the AI Hub, the campus directory on these tools, offers model statements for drafting those guidelines. --- Unanswered questions --- Can remote assessment be preserved when no detector is reliable? Is it fair to grade an assignment merely for being turned in? What happens to honest students if the machine answer is rewarded? Will paper become the norm again? --- EPM analysis --- After OpenAI announced the resolution, through artificial intelligence agents, of the existence and smoothness problem of Navier-Stokes, one of the hardest unsolved problems, Borcherds warned that if the technology keeps its current pace, in a few years there will be nothing human mathematicians can do that the machine cannot do better. He admitted he no longer knows what to advise those considering mathematics, a career that until five years ago seemed among the most sheltered, and recounted that ChatGPT itself could not tell him what will happen. Even so, he considered that academic inertia could keep the department largely unchanged, like paper journals, useless for two decades in his account. He recalled that looms displaced hand weaving and automobiles horses, but held that this is the first time something like this happens in mathematics. 📌 EPM Take: In EPM's view, Borcherds's decision protects something no detector managed to guarantee: that a grade means real learning and that honest effort does not end up losing. Returning to paper is not nostalgia, it is a practical defense of fairness while the institution defines clear rules. Berkeley's challenge will be to turn that individual reaction into a common policy that does not leave each professor alone before a technology advancing faster than the regulations.
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