> All the above have to abide by building codes, use standardised parts and tools and most have to conform to certified standards which their work is then also

> All the above have to abide by building codes, use standardised parts and tools and most have to conform to certified standards which their work is then also validated against. This is a huge logical error. You just proposed to use the lowest common denominator, but then your response to the analogy is that other people are constrained by rules. Yes, they are constrained by rules, that are very complex, and even then, the constraint ensures a minimal standard, it doesn't block you from creativity. Fire prevention rules will define how wide a corridor has to be, but it won't forbid you to build a wider corridor or to paint its walls. BTW editing your post to answer a post below you wasn't the smartest thing to do…