"Safety last!" - this is the motto used by Harold Lloyd in the 1920s to climb the façade of a high-rise building in his eponymous film. He also made it to the top - and how! Things shouldn't be this daring, barely scraping by catastrophe by a hair's breadth. So safety first is preferable, after all: this is how machines, systems and operating equipment should be designed so that nobody falls from a great height or is harmed in any other way. Harold Lloyd would have been delighted back then.