"Is he right, Mother?" asked Diko.

"More to the point," said Hassan, "will he make trouble for us?"

"I think he'll head the project of finding out what would have happened," said Tagiri. "I think the problem will take hold of him and won't let go and he'll end up working with us."

"Oh good," murmured someone dryly, and they all laughed.

"Kemal as an enemy is formidable, but Kemal as a friend is irreplaceable," said Tagiri. "He found Atlantis, didn't he, when no one believed it even needed to be discovered? He found the great flood. He found Yewesweder. And if anyone can, he'll find what history would have been, or at least a plausible scenario. And we'll be glad to be working with him." She grinned. "We mad people, we're stubborn and unreasonable and impossible to deal with, but there is a certain breed of willing victim that chooses to work with us anyway."

The others laughed, but few of them thought that Kemal was anything like their beloved Tagiri.

"And I think we've all missed one of the biggest points of all in Diko's great discovery. Yes, Diko, great." Tagiri looked around at them. "Can't you see what it is?"

"Of course," said Hassan. "Seeing that little performance by actors pretending to be the Trinity lets us know one fact beyond doubting: We can reach back into the past. If they can send a vision, a deliberately controlled vision, then so can we."

"And maybe," said Tagiri, "maybe we can do better."

According to the Popul Vuh, the holy book of the Mayan people, Xpiyacoc and Xmucane gave birth to two sons, named One Hunahpu and Seven Hunahpu. One Hunahpu grew to be a man, and he married, and his wife, Xbaquiyalo, gave birth to two sons, One Monkey and One Artisan. Seven Hunahpu never grew up; before he could become a man he and his brother were sacrificed at the ball court when they lost to One and Seven Death. Then One Hunahpu's head was put in the crotch of a calabash tree, which had never before borne fruit. And when it did bear, the fruit looked like a head, and One Hunahpu's head came to look like the fruit, so they were the same.

Then a young virgin named Blood Woman came to the ball court of sacrifice to see the tree, and there she spoke to the head of One Hunahpu, and the head of One Hunahpu spoke to her. When she touched the bone of his head, his spittle came out onto her hand, and soon she conceived a child. Seven Hunahpu consented to this, and so he was also the father of what filled her belly.

Blood Woman refused to tell her father how the child came to be in her womb, since it was forbidden to go to the calabash tree where One Hunahpu's head had been perched. Disgusted that she had conceived a bastard, her father sent her away to be sacrificed. But to save her life, she told the Military Keepers of the Mat, who were sent to kill her, that the child in her came from One Hunahpu's head. Then they didn't want to kill her, but they had to bring her heart back to show her father, Blood Gatherer. So Blood Woman fooled her father by filling a bowl with the red sap of the croton tree, which congealed to look like a bloody heart. All the gods of Xibalba were fooled by her false heart.

Blood Woman went to the house of One Hunahpu's widow, Xbaquiyalo, to bear her child. When the child was born, it was two children, two sons, whom she named Hunahpu and Xbalanque. Xbaquiyalo didn't like the noise the babies made, and she had them thrown out of the house. Her sons, One Monkey and One Artisan, had no wish for new brothers, so they put them out on an anthill. When the babies didn't die there, the older brothers put them in brambles, but still they thrived. The hatred between the older brothers and the younger brothers continued through all the years as the babies grew to be men.

The older brothers were flutists, singers, artists, makers, and knowers. Above all, they were knowers. They knew when their brothers were born exactly who and what they were, and what they would become, but out of jealousy they told no one. So it was justice when Hunahpu and Xbalanque tricked them into climbing a tree and trapped them there, where the two older brothers turned into monkeys and never touched the ground again. Then Hunahpu and Xbalanque, great warriors and ball players, went to contest the quarrel between their fathers, One and Seven Hunahpu, and the gods of Xibalba.

At the end of the game, Xbalanque was forced to sacrifice his brother Hunahpu. He wrapped his brother's heart in a leaf, and then he danced alone in the ball court until he cried out his brother's name and Hunahpu rose up from the dead and took his place beside him. Seeing this, their two opponents in the game, the great lords One and Seven Death, demanded that they, too, be sacrificed. So Hunahpu and Xbalanque took the heart from One Death; but he didn't rise from the dead. Seeing this, Seven Death was terrified and begged to be released from his sacrifice. Thus, in shame, his heart was taken without courage and without consent. And this was how Hunahpu and Xbalanque avenged their fathers, One and Seven Hunahpu, and broke the great power of the lords of Xibalba.

Thus it says in the Popol Vuh.

When a third son was born to Dolores de Cristo Matamoro, she remembered her studies in Mayan culture when she was growing up back in Tekax in the Yucatan, and since she was unsure who the father of this child was, she named him for Hunahpu. If she had had yet another son, no doubt she would have named him Xbalanque, but instead when Hunahpu was still a toddler she was jostled off a platform in the station at San Andres Tuxtla and the train mangled her.

Hunahpu Matamoro had nothing of her, really, but the name she gave him, and perhaps that was what steered him into his obsession with the past of his people. His older brothers became normal men of San Andres Tuxtla: Pedro became a policeman and Josemaria became a priest. But Hunahpu studied the history of the Maya, of the Mexica, of the Toltecs, of the Zapotecs, of the Olmecs, the great nations of Mesoamerica, and when his test scores proved high enough on his second try, he was admitted to Pastwatch and began his studies in earnest.

This was his project from the beginning: to find out what would have happened in Mesoamerica if the Spanish had not come. Unlike Tagiri, whose file had a silver tag that meant her oddities were to be indulged, Hunahpu met resistance every step of the way. "Pastwatch watches the past," he was told again and again. "We don't speculate on what might have been if the past had not happened the way it happened. There's no way to test it, and it would have no value even if you got it right."

But despite the resistance, Hunahpu continued. No team of coworkers grew up around him. In fact he belonged to another team, one that was researching the Zapotecan cultures of the northern coast of the Isthmus of Tehuantepec in the years prior to the coming of the Spanish. He was assigned to this team because it was the legitimate project that came closest to Hunahpu's interest. His supervisors were well aware that he spent at least as much time on his speculative research as on the observations that would contribute to real knowledge. They were patient. They hoped he would grow out of his obsession with trying to know the unknowable, if they left him long enough. As long as his work on the Zapotec project remained adequate -- which it did, barely.

Then came the news of the discovery of the Intervention. A Pastwatch from another future had sent a vision to Columbus, which turned him away from his dream of leading a crusade to liberate Constantinople and brought him, eventually, to America. It was astonishing; to an Indie like Hunahpu it was also appalling. How dared they! For he knew at once what it was that the Interveners had been trying to avoid, and it wasn't the Christian conquest of Islam.