Great Erasure
From OtanWiki
The Great Erasure occurred at exactly the day before the first day of 1 IM. People awoke that day in rags or robes, not knowing how they came to be so attired. Eventually the clues around them made it clear for many, what and who they were. Blacksmiths remembered how to smith, scribes remembered how to write, but any memory from before the great erasure was forever gone.
