This is how perfect and truthful God's message in Genesis is for us.
What will it matter for you in your daily life what happened in that way-back time, however long ago it was? It seems it should be sufficient to be given an answer and then carry on to put food on a table and a roof over heads. Many people are content to answers handed them and carry on. Maybe that's best.
We are all as little children to God. God is truthful to us as a loving parent.
A child might ask a parent, "what is a squirrel?". The parent might say, "a squirrel is a little furry creature who lives in a tree and eats acorns". Has the parent lied? Certainly not, not even in some obfuscation intended by omission, but that parent has not explained to that child the "full nature of the squirrel", because it really isn't necessary at the time and it really wouldn't help the child. Certainly, the child would stand there, blank-eyed, mouth agape, likely to lose interest from the wandering thoughts in his mind, were the parent to go on to say, among other details, "squirrel is a mobile construct of many, many smaller parts, tissues, cells, molecules, atoms, sub atomic particles" and so on, in great detail. Perhaps for the practical functioning of the child, at the time, the parent may actually be doing the child a disservice.
What is time to God? What is time, anyway?
The child might ask the parent, "how old is the squirrel?". The parent, who might be particularly biologically understanding of squirrels, might say, "that squirrel is about five years old.". Now, to the child's perspective, this is perfectly true. What the parent might not say, at the time, is that time is relative, that the reason the child has a perspective of "five years" is because the child lives on a planet, moving through a solar system, which is moving through a galaxy, which is moving through a universe, and were everything to be moving even a small amount faster, the squirrel might appear to live a different amount of time. This wouldn't help the child, who really only wanted a short answer before he goes out to play.
God doesn't lie to us, but also God reveals to us more relative truths, over time, as we're ready to handle them. To everything there is a season. There are many messages in Genesis, but the most important is that God is (He wants us to know Him), that God created (He set this in motion), that this "place" is for us, and He loves us. Please remember those things and don't let the "hashing of the details" come between us.
