A screen showing human brain cells is photographed at the Swiss start-up FinalSpark in Vevey, on October 3, 2025. Inside a lab in the picturesque Swiss city of Vevey, a scientist feeds tiny clumps of human brain cells the nutrient-rich fluid they need to stay alive. This new field of research, called biocomputing or "wetware", aims to harness the evolutionarily honed -- yet still mysterious -- computing power of the human brain. (Photo by Fabrice COFFRINI / AFP) (Photo by FABRICE COFFRINI/AFP via Getty Images)