Though Tagiri did not put her own body back in time, it is still true to say that she was the one who stranded Christopher Columbus on the island of Hispaniola and changed the face of history forever. Though she was born seven centuries after Columbus's voyage and never left her birth continent of Africa, she found a way to reach back and sabotage the European conquest of America. It was not an act of malice. Some said that it was like correcting a painful hernia in a brain-damaged child: In the end, the child would still be severely limited, but it would not suffer as much along the way. But Tagiri saw it differently.

"History is not prelude," she said once. "We don't justify the suffering of people in the past because everything turned out well enough by the time we came along. Their suffering counts just as much as our peace and happiness. We look out of our golden windows and feel pity for the scenes of blood and blades, of plagues and famines that are played out in the surrounding country. When we believed that we could not go back in time and make changes, then we could be excused for shedding a tear for them and then going on about our happy lives. But once we know that it is in our power to help them, then, if we turn away and let their suffering go on, it is no golden age we live in, and we poison our own happiness. Good people do not let others suffer needlessly." What she asked was a hard thing, but some agreed with her. Not all, but in the end, enough.

Nothing in her parentage, her upbringing, or her education gave any hint that one day, by unmaking one world, she would create another. Like most young people who joined Pastwatch, Tagiri's first use of the Tempoview machine was to trace her own family back, generation before generation.