Security Is Like Gardening

You want good results.
You do what you can to produce good results, while holding weeds and pests at bay.
However, there are limits on what you can do (time, energy, weather).
You must be both reactive and proactive (soil prep, fertilizer, weed preventers, weeding).
There are no silver bullets (weeds grow despite weed preventers).
There are a myriad of threats (weeds, bugs, critters).