Chestnut
Maybe the spirit of the Lord came down and told those people what to write. You cannot dispute where there is no evidence.
Maybe one of the many traditional creation stories from another culture is the true one. As you say, you can't dispute where there is no evidence.
But humans are curious and wonder about things. Wherever humans lived, they always told stories of their ancestors, including tales of why they were where they were. . If they had no evidence, they made deductions from what they saw and experienced. They used their hands to make bowls out of clay, spears, arrows and bows out of wood bone and stone, clothes out of skins, cloth by weaving fibres, so it would seem to them that a superior being must have made people (out of clay) and then made them live by using His own breath. They looked after their young and their weak and helpless, so the superior being must be looking after them and causing there to be food and shelter. They disciplined their young people for being antisocial and disobeying their parents and tribal leaders, so if they didn't obey the superior being as they would a father or a leader, He would punish them.