Similarly, many Christians like to dismiss evidence in Scriptural study because of the supposed presuppositions of the discoverers. An archeologist will tell them that there is no archeological support for the fall of Jericho story, and that the evidence actually points against such a story, rendering it virtually impossible to possess genuine historicity. A Christian might say that such evidence can be rejected because those who analyze and study it are liberal academics who reject the authority of Scripture, and so seek to find ways of debunking it. This is such a terribly false generalization that many Christian biblical scholars would find offensive.
Side note: This does not represent all of conservative Christianity's responses to such evidence; there are conservative biblical scholars who engage in a positivist mindset about the historicity of many of the Bible's stories--whether or not their arguments hold any water is a completely different discussion.My last example comes from Greg Boyd's testimony. When he was a teenager, he found out about several of the Bible's contradictions, and they gravely disturbed him. He highlighted all of them that he could find and brought them to his Pentecostal pastor. "What do I do with these?!" he asked, "How can the Bible have contradictions?!" His pastor paused and frankly asked him, "Greg, did you have sex out of wedlock?"
This pastor refused to engage a discussion about Bible contradictions, and chose to label Greg as a rebellious sinner, and therefore, able to be ignored. Forget the evidence, forget the fact that I'm staring contradictions in the face; if I can find out that they're coming from a sinful, rebellious teenager, I don't have to deal with them. Such a blatant rejection of evidence reveals a lack of any desire to find out what truth actually is, and instead reveals a mind that only wants to blindly accept an ignorant bliss.
Now, I'm a child of postmodernism, so I do realize our subjectivity and our presuppositions, and that all reality is interpreted reality, all facts are interpreted. However, this does not mean I just embrace whatever presuppositions I have as true, and judge reality based only on weighing presupposition against presupposition. If I am interested in what is true, I will try to rise above my presuppositions, even though I will never do so fully. If I am interested in what is true, I will listen to evidence and let that evidence inform my thinking.
The church wanted to silence Galileo because he discovered heliocentrism. The Bible seems to suggest that the earth is the center of the universe, and the sun revolves around it; so they rejected Galileo's claim that the earth revolves around the sun--something we all know to be true today.
Don't make sweeping generalizations about presuppositions to silence evidence. Let the evidence inform your worldview.