Will the compiler's introduction explain why it's important for testability?

This is the whole wording of the testability hint.

Put your nonverbal communication skills to use.

Provide a traditional description of the grammar using BNF notation.

Provide a transparent method of visualising the definition graph of linguistic structure.

The Big Picture of Compilers:

By breaking down the three-stage gathering system into its component elements, we can see that there are a few testability issues:

A study of words:

Deciphering:

Create some software.