Ah, indeed, the dreaded question "How hard can it be?" and its rarely-spoken assumption "that looks simple from my armchair". Well...most of the low-hanging fru

Ah, indeed, the dreaded question "How hard can it be?" and its rarely-spoken assumption "that looks simple from my armchair". Well...most of the low-hanging fruit has already been picked, and things that look simple are chock-full of those pesky details that are handwaved away in the birds-eye view. "Just use the right technology," and you have flying cars, strong AI, self-driving vehicles, space elevators and whatnot. How hard can it be?