Which statement is true about the buffer in a theory of constraints system?

A buffer in a theory of constraints (TOC) system serves a crucial role in managing production flow. Specifically, it is designed to protect the system from variability and uncertainties that can cause delays, particularly at the critical chain. By strategically placing buffers at points in the process where variability is most likely to impact throughput, it contributes to maintaining consistent workflow and ensuring that bottlenecks do not hinder overall production efficiency.

When buffers are used effectively, they allow for a smoother operation by absorbing fluctuations in demand or disruptions in the process, thus preventing potential delays from affecting the entire system. This ultimately leads to improved reliability and increased throughput, demonstrating how buffers are essential in managing constraints within production systems.