Board Thread:General Discussion/@comment-32292967-20180104213302/@comment-5896827-20180331210734

Some other children of the big three would've been born and fulfilled the prophecy. Anything the Oracle says is set in stone so, if she says a child of the big three will usher in disaster, then that will happen. If it was not Percy, Nico or Thalia, then it would've been someone else. You can't prevent a prophecy.