Tolkien's final First Age timeline

[Galin]

Originally Posted by Arvegil145

This all hinges on the fact that Tolkien in his published works had a completely different idea. That is why I suggested to Huinesoron to adopt whatever doesn't contradict LOTR and RGEO.

Wholly agree!

Christopher Tolkien even states that had his father remembered what he'd added to the second edition about Celebrimbor, he'd have "undoubtedly" felt bound to the already published text.

I think there's no doubt Tolkien desired certain "purposed contradictions" in his legendarium, but I don't see any indication that he remembered what he'd already published about both Galadriel and Celeborn and still wanted to alter the canon. And it might seem an odd thing to forget about Galadriel's RGEO tale for example, but on the other hand, this might have been more a matter of not remembering -- at the moment of writing a given text or letter -- what he'd actually published as opposed to written.

In late texts there are various examples of Tolkien seemingly forgetting stuff, including: Beards, Glorfindel II, the Problem of Ros (where he indeed ultimately rejects an idea due to an already published detail). The following seems to be the mindset of an older Tolkien at least, noting Christopher Tolkien's statement in note 8 to Of Dwarves and Men

"I mention all this as an illustration of his intense concern to avoid discrepancy and inconsistency, even though in this case his anxiety was unfounded. For an earlier account of the Runes see VII. 452-5] CJRT, commentary, POME

Of course one could characterize this as Christopher Tolkien's opinion, given that his father did change certain details for the Second Edition at least, but in any case, I hold JRRT to what he published, especially given his often-changing mind, and where arguable contradiction is found, I put author-published description above even late ideas.

Put it this way: as altering already published work affects the art of world-building, I think Tolkien at least needs to be aware when he's contradicting something in print -- meaning, he needs to be aware for the alteration/new idea to be truly considered, and then, added, or not, "in story" for his Readership.

My opinion anyway.