These rules are made for a context where you need to avoid fanciness. You want to do the bare minimum that gets the task done and gets it done with extraordinar

These rules are made for a context where you need to avoid fanciness. You want to do the bare minimum that gets the task done and gets it done with extraordinary reliability and robustness. Fancy language constructs and complex algorithms are generally not helping. Keeping the program simple helps verification using automatic tooling and manual code reviews because the risk of hidden side effects or undiscovered defective code paths is minimized.