The beginning of wisdom is a firm grasp of the obvious...
(NE Victoria, Australia)
Over the years, I've boiled it down to just a few lines.
They come from production engineering, but they apply widely...
Preventing troublesome designs:
* Avoid complexity wherever possible.
* Seek simple ways to prevent assembly errors.
* Minimise the number of different types of components.
* Know the limits of your production capabilities and design in margins for error.
Happy building, and smooth sailing!