I hope a follow-up moment was realizing that sometimes when an engineer says something is "simple" it's that they don't yet know that they don't know how to do that.

And when an engineer says something is hard, sometimes it's because they've done it before, and it really really sucked and burned months of their life and can we please not talk through the details that still make me cringe?

And occasionally there's that one engineer who describes stuff as "simple" after watching an old Rich Hickey talk.