“…Stabilization of an inverted pendulum with delayed feedback is a benchmark problem in control engineering literature [2,28,26,33] as well as in understanding human balancing and human motor control [18,21,20,23]. As a matter of fact, many control concepts are often implemented in simple inverted pendulum systems, see, e.g., [22,12,26,11]. As mentioned in the Introduction, stabilization by a delayed state feedback is not possible if the delay is larger than a critical value [30].…”