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Frederick Winslow Taylor, known for his contributions to the scientific management theory, did not solve a problem with a vending machine in the traditional sense. He is best known for his efforts in improving industrial efficiency and management. Taylor's work typically dealt with optimizing work by standardizing tasks and incentivizing workers through performance-based wages.
The confusion might arise from the fact that sometimes the term "vending machine" can be used metaphorically to describe a system where inputs lead to standardized outputs, which is somewhat related to Taylor's principles of scientific management. In this metaphorical sense, one could say that Taylor aimed at making the workforce operate like a vending machine: predictable, efficient, and standardized with reduced variability in performance. However, it is crucial to clarify that Taylor's work did not involve vending machines directly but rather focused on industrial work processes.