The conclusions of science "as science" do not impinge on morality. Science is only connected to morality when people bother to connect it. Science explains the natural world--God's world--through observation and systematic analysis. The fact that any idea defended today could be rejected tomorrow does not mean that scientific conclusions are "in flux"; science is not in flux--what is in flux is our own poor grasp of the evidence. By the way, science doesn't rely exclusively on human experience either because human beings are biased.