ABSTRACT
Uncertainty is an important aspect in experiment as well as modelling in various science and engineering problems. It has become one of the popular paradigmatic changes in recent decades. These changes have been demonstrated by a gradual transition from the traditional outlook, which suggested that uncertainties were undesirable in science and should be avoided by all possible means. Traditionally, science strived for certainty in all its manifestations (precision, specificity, sharpness, consistency, etc.); thus, uncertainties (impreciseness, non-specificity, vagueness, inconsistency, etc.) may have been regarded earlier as unscientific. In the modern view, uncertainties have been considered as an essential part of science, and it is the backbone of various real-world problems.
