I think the bible is surprisingly enlightened in some areas of the old testament, take Leviticus for example, the rules regarding skin disease or rashes show an enlightened view of how to prevent spread of contagion etc. also the Jewish rules regarding not mixing dairy and meat show some clear knowledge of the danger of bacterial contamination.
It is however I think unrealistic to expect that after countless translations and transcriptions that Gods perfect word remain as He intended it. After all, however hard we try, we are human and therefore imperfect, each with our own experiences and opinions, which this thread amply demonstrates, if God appeared to each of us with the same message tonight, how many different versions of that message would we see tomorrow? And how different again would those messages be after several thousand years of passing down by word of mouth, then written, then translation into languages which were not even in use when the original message was given, and may not even have the vocabulary to express fully the message? This is why I am unable to accept the old testament as Gods literal word. The imprint of mans imperfect hand rests too heavily on it for me to judge or condemn anyone based on its contents. It is a moral compass, and a guide, but my direction comes from prayer, faith and the new testament.