Paul hasn’t run out of his list of the devices of human beings apart from God.  They are inventors of evil things.  Gill’s Bible commentary includes evil schemes of morality and philosophy, and of evil practices, as well as principles.  Novel concepts of evil thinking and speaking.  How many times have you thought about something on the news and said to yourself ” that is pretty out there”, or ” who thinks of stuff like that”?  Then before you know it the weirdness is mainstream, and taught in school.  When “normal” folks object they are called names and dismissed and made fun of.  And so called progress is made.