At the very least, I think it's an unnecessary context-switch. Why introduce yet another language in your toolchain? The boss isn't going to be able to understand the natural language tests, because s/he will be introducing their own assumptions to the ambiguous nature of human language. Like how non-programmers tend to use "or" to mean "exclusive-or". Or the plethora of issues that come up when assuming N-based indexing when you actually have (1 - N)-based indexing (for values of N that are either 0 or 1).