Author(s): Kun Zhang, Qicheng Zhang, Shuaishuai Tong, Wenquan Wu, Xiling Feng, and Chunyin Qiu Experiments with programmable electroacoustic cavities reveal that a multistable system can be steered into states that are unreachable with conventional control methods. [Phys. Rev. Lett. 136, 037201] Published Tue Jan 20, 2026