When the visions are decades ago, that's one thing.
He wrote Seven Decades of the Union 1790-1860 (1872).
For decades, teams of three hardy fools had tried to knock each other senseless with high pressure fire hoses, while the spectators tried to escape the cross fire.
Fast-forward a couple of decades, and the Internet has done vastly more than O'Neill could have imagined to promote open information about government.
Iliana was a relatively young Immortal who had been at his side for only a few decades, having caught his attention with her fighting skill and fierce loyalty.