You’ve been removed from the society that the game takes part in, so you don’t get some of the references. For each rank in this power, you take a cumulative -5 in Knowledge (history, pop culture, & current events), and may not Take 10 for a given time period.
Rank 1 (3cp): Choose a period of time between 20-100 years (example: 1945-2011) during which this penalty and condition applies. Perhaps you were in suspended animation and missed out on things.
Rank 2 (6CP): Choose a period of time between 100-1000 years (example: 999 – 1995) during which this penalty and condition applies. Perhaps you descended from someone who left their world and only heard about the history they’d known when they left.
Rank 3 (9CP): All of recorded time before you started up this hero business. You just arrived here.