A significant gap exists between how computer-vision software and embedded safety-critical software define the term real time. In computer vision, "real time" often means "real fast" and refers to high average throughput with low latency. In contrast, safety-critical embedded systems consider "real time" to be a statement about predictable timing under continuous performance. Put in a larger context, this disparity in definitions is merely a symptom of the fact that, historically, computer vision and embedded systems have evolved independently.