Supposing that months or years ago I have answered a Question a certain way, but then I gain a change of perspective on that issue and/or I come across information which negates a position that I express in the Answer to said Question, what is our preference for me to refute this previously held position?
Is it better to:
Edit the Answer and input some kind of note indicating that the Answer previously contained a different stance from what it will eventually be saying? E.g. "I thought such-and-such before, I submitted that thought into this Answer, but later on found out I was mistaken, and consequently, here is what I currently have to say on the matter."
Add a second/alternate Answer explaining that I'm doing this in order to debunk my older Answer to the Question?