The phrase suggests a perspective or viewpoint colored by a romanticized, idealized, or unrealistic optimism. It implies that potentially negative or problematic aspects are either overlooked or perceived in a more favorable light than reality dictates. As an example, someone perceiving a flawed plan as foolproof might be said to be viewing it through such a lens.
This type of perception, while potentially motivating, can also lead to detrimental outcomes. It may foster poor decision-making by obscuring potential risks and challenges. Historically, this kind of optimism has been both a driving force behind innovation and a contributing factor to spectacular failures. Its influence can be observed across various domains, from personal relationships to economic policy.