I daresay you are half the Hebrew scholar Sailhamer is nor do you fully understand his point about "beginning". He did give examples of other places in Scripture where the word is used as an undefined period of time. Its not absurd unless you cling to the English rendering as your final authority. Plus, Sailhamer's view is that 1:1 is the creation of the world and that 1:2ff. is the preparation of the gard of eden (promised land). LIke I said, for those who put stock and value into biblical theology over systematic, this view has much to commend it. You quick dismissal shows you didn't give it the time of day to even consider it. You are so stuck in your view that you can't even consider that your interpretation may be wrong. Sailhamer's view advocates a 24 hr day scenario in Gen. 1. But he is arguing that the 6 days are not of creation but of preparation for habitation. God is preparing the Garden/temple for humans. His case is exegetically strong. And this isn't a case of demythologizing the text and removing the supernatural. It is still advocating God as the source of all things... but it is a change in how it has been understood the past many years.
Sailhammer, for all his contributions, is not FOREMOST a Hebrew Scholar. His specialty is Old Testament theology; a related but distinct field from linguistics.
By way of comparison, you would be hard pressed to name a SINGLE specialist in Ancient Hebrew, who would give credence to anything other than a 6 day creation; much less Dr. Sailhammer's view. The majority opinion among the Church fathers, and BY FAR the majority opinion of experts in Ancient Hebrew language and culture, is that Genesis 1 is teaching that the entire Creation was made in 6 regular days, start to finish.
Secondly, I defy you. Having done a search, myself, through the Old Testament Hebrew canon, there is not a single time where it is used to refer to a period of time at all. It is ALWAYS used to refer to either the "first" of something, or the "beginning" or START of something. It does not refer to a period of time at all.
Third, linguistically, Sailhammer's interpretation denies the literary pattern seen throughout the rest of Genesis 1. The natural reading, that accords with the rest of the chapter, is that all of verses 1-5 occur on Day 1.
Fourth, the only reason why any of this is even up for discussion, is because a bunch of atheists, with twisted, corrupt minds, unregenerate hearts, and a desire to deny the scriptures, have TOLD you, and others, that the earth is old. They have done experiments, which at the outset will not even consider the possibility of a creator, or special creation, to try to "prove" their views. They use this same reasoning on the resurrection of Jesus. It goes like this; "Well, we know Jesus didn't rise from the dead, so how did these stories occur?" They then go on to "prove" what really happened to Jesus.
The same thing with age of the earth issues. The "scientists" say, "Well, we know God did not just speak this stuff into existence. So how do we explain it?" They then come up with the most absurd of explanations, of how things occurred, without the work of God.
That is not the sad part, however. These are God hating, unregenerate rebels. This is to be expected. What is sad, is that "men of God" hear there intellectual snobbery, and go "Well, they must be right. How do we change scripture to accord with what they are saying?" The saddest part is, this is not even the theologians doing the experiments...they just place their faith in the God hating atheists, and their word that such things are so!
Sorry, but the scriptures are clear. God PROMISES to lead us to truth, and to Godliness, THROUGH HIS WORD. Not through following secular, naturalistic "science."