Lion of God said:
The short-sightedness is more relevant for those who assume that the bible can't be literal. These will hold to the outward form of our religion, but reject its real power.
Certain parts of the Bible are definitely meant literally. Certain parts, on the other hand, are definitely not meant as such. Genesis is likely an allegorical creation myth. Allow me to explain why this is the case.
Genesis and other contemporary books were written a long time ago. Thousands of years ago, in fact. Science had not even been invented at this time (yes, the concept of science had to come from somewhere). Humanity, as a whole, was not capable of understanding how the earth came to exist in the state we now see. We could not have comprehended natural selection or mutation. We didn't have a fossil record to refer to, nor geological studies to look to for evidence.
However, there still existed a need to impress upon man that God was the originator of all things. Thus, a creation story was needed - one that claimed God as original cause and that taught a morality lesson. Humanity had to learn that God was to be obeyed, and that they had within them a nature capable of doing wrong. This was accomplished through a creation myth, as seen in Genesis, that detailed God creating the world and punishing the first humans for their disobedience.
It is important to note that, at the time, it was not critical that anything in the early Bible be "historical". The people of that age had little concept of what history meant. They were not skilled at examining records (for few existed), nor at analyzing relics and fossils or tracing geneologies. The majority of people didn't care what actual happened 500 years before. They cared about placing their faith somewhere, and being content in the existence of a higher power. What they were good at is relating important morality tales, which is why we now have the stories expressed in Genesis.
It is not important that Genesis be literal. That God is the creator of the universe is not being disputed. That God is deserving of respect and worship is not being disputed. All these things, the only important things, are true in an allegorical Genesis. Genesis doesn't need to be literal to be true.