Grammar purists consider “correct” to be an absolute non-gradable adjective, I believe - though colloquially have at it and do whatever suits your written voice

Grammar purists consider “correct” to be an absolute non-gradable adjective, I believe - though colloquially have at it and do whatever suits your written voice. I only mentioned it in contrast to the insistence that, er, one should use one rather than them - which to my written voice is a tad too formal.