I suspect that's somewhat of a technologist-centric POV: we take a spool of wire or a knife as "simple" and a mail client as "complex" but for non-tech people,

I suspect that's somewhat of a technologist-centric POV: we take a spool of wire or a knife as "simple" and a mail client as "complex" but for non-tech people, both would be "simple". Similarly, a post office employee would look at a the spool of wire and think "actually, this simple object might be as complex as routing mail internationally". _everything_ is complex and taken for granted by almost everyone!