“Tangibility is the property that a phenomenon exhibits if it has and/or transports mass and/or energy and/or momentum.” A commonplace understanding of “tangibility” renders it as an attribute allowing something to be perceptible to the senses. Tangibility can be understood in many ways depending on cultures, organizations, and people personality, for example. Virtual human-centered design works on the basis of virtual prototypes and digital twins of systems being designed and further used. Virtual prototypes are incrementally developed in an agile way and assessed using metrics, measurement models, and observable variables. Cooper–Harper subjective rating scale is a good example of support for assessing figurative tangibility as subjectively provided by human operators controlling and/or managing complex systems. Consequently, trust metrics could be developed by considering the following tangibility properties: complexity, maturity, stability, flexibility, and sustainability. Management of a fleet of robots on an oil-and-gas platform requires the specification of a network of robotics concepts.