It probably was wishful thinking, but it was also possible as well.
"The only way to be sure of that is to wait," which was something they'd never done well. "But alright, let's go with that. What if it and the vertigo are side effects? Side effects to what?"
Nightwing pulled up a map of the country and marked cities as he mentioned them, "Whatever it was, it seemed to be focused in Gotham and hit around the same time as the initial blackout. But even though the blackout spread to the rest of the city, this spread to Blüdhaven and even as far as Jump, neither one of which had blackouts. So was it just a coincidence?"