THE ROLE OF THE AI HARNESS ENGINEER

THE EVERYDAY TOOLBOX A harness engineer uses a modest set of everyday tools. A code editor and a terminal are used for writing and running programs. A version control system, which records every change to files so that you can compare or undo them, is used constantly. A test runner executes the tests with one command. A trace viewer or log reader lets you look inside runs. A spreadsheet or small script turns evaluation results into summary numbers. An AI assistant, used critically, speeds up drafting and review, as the prompts in this book have shown. None of these tools is magical, and none replaces understanding. The skill lies in knowing what you are asking each tool to do and checking that it did it. LEARNING PLAN FOR THE FIRST NINETY DAYS A short plan keeps learning focused. In the first month, finish the Practice Lab and make sure you can explain every file in it. In the second month, extend it with one new tool and one new test, and read one real project or tutorial from Appendix F. In the third month, write a short design note about a decision you made, and ask a more experienced person to review it. At the end, ask yourself which of the seven layers you understand least, and plan the next month around it.