This line by @sjshancoxli.liberalcurrents.com might be the best short description of "originalism" I've read yet.
“Originalism is an incoherent doctrine. It allows you to prove anything. Thus what it amounts to is a ritual invocation of the Founders, gesturing at this or that piece of text, before delivering whatever conclusion was approved on Fox News the night before.”
www.liberalcurrents.com/we-have-no-s...
liberalcurrents.com
We Have No Supreme Court
The philosophical incoherence of originalism prevents the Court from performing its core functions as a supreme court.