When I read this:
"Does this mean we should make sure there’s something flawed in the instruments we design, like medieval artists who put flaws in their work?"
I had to do a little research to find that, for a believing artist in the middle ages, it was considered respectful and an antidote to pride to intentionally build in a flaw in their work of art, so that noone would think they thought themselves equal to the perfection of God's work.
Man, I would have been a saint!! :-)