The article discusses common mistakes made by developers when using the Go programming language. It highlights pitfalls related to concurrency, error handling, and performance optimization that can lead to inefficient code. Understanding these mistakes can help programmers improve their skills and write more effective Go applications.

Go's data race detector has a limitation that can lead to missed data races in code, particularly when mutexes are used. The article illustrates a scenario where a race condition occurs due to an unguarded increment in a concurrent environment, which the race detector fails to detect under certain execution orders. Understanding the detector's boundaries is crucial for ensuring thread safety in Go applications.