Just walking down the street people know not to step in front of a bus, or hurl themselves down the subway stairs.
Just to survive in society we deal with hazards all the time. Everyone is pretty good at this most of the time.
When we are setting things up it is good to divide our decisions into ones made for safety, ones made for simplicity/practicality, and ones made for aesthetic reasons.
Eg, Power leads across the grass would be a practical decision, permanent underground power would be safer but might require more money or time than you have available.
Choosing black power leads over orange leads is an aesthetic decision. In most cases quite a reasonable one. But it is good to step back and think about each decision and why it is made.
Following some documented process can be a good thing. It results in evidence that things weren't just thrown together at the last minute. If the installation is in accordance with some generally accepted standard (or institutionally endorsed standard) then this would demonstrate that some care had been taken with the work and with people'e safety.
