Rate your knowledge of Go from 1 to 10.

Self-assessment of Go knowledge is subjective, but for a middle+ level I would rate it 7-8 out of 10.

This means confident mastery of basic and advanced language features: goroutines, channels, interfaces, error handling, standard library, understanding of concurrency principles and efficient memory management.

To achieve 9-10, one needs a deep understanding of runtime internals, optimizations, writing high-performance and safe code, as well as experience working on large Go projects.