And since we're already discussing about mysteries here, I wonder: who have read topic 3? 
1, 2, and 4 exist in the staff forum. 3 was permanently deleted at some point (it must have contained Satoshi's real name and address).
Is this the first bitcointalk.org topic?
What happened with topic 1,2,3 and 4?
What happened with topic 1,2,3 and 4?
1, 2, and 4 exist in the staff forum. 3 was permanently deleted at some point (it must have contained Satoshi's real name and address).
Hopefully Theymos moved the forum software to more powerful disks at some point in 2017-18 and thoroughly wiped the data on the old disks.