You didn't even read the introduction. > In this paper, we raise design issues and present recommendations; for clarity we say “never” for design choices that

You didn't even read the introduction. > In this paper, we raise design issues and present recommendations; for clarity we say “never” for design choices that are inappropriate for dependable or safety-critical applications. For novelty and other non-dependable applications, obviously examination of cost and design trade-offs may lead to other decisions, and such decisions should be backed by competent empirical evaluation.