First, nuclear energy, electricity, physics, and mathematics do not in any way challenge our spiritual knowledge, so they are not relevant to the question.

When you get into cancer, and antibiotics, its a very different story. Antibiotics are shortening lives every day, and their use is in defiance of God's word, which tells us the "herbs of the field" and "every green leaf" are provided for our health, and they definitely do a good job. Cancer 'cures' do the same as all the other drugs. Sometimes there is remission during treatment, but in the long run the treatments shorten life, even in those that experience remission. The real cure for cancer is to remove the original cause, which in the preponderance of cases is a spiritual issue. (bitternewss, hatred, unforgiveness, blaming God, or any other form of 'toxic' thought) Some illness is due to use of chemicals without regard for the effect on the body, and some cancers fall into this category, but the main rule still applies: remove the cause.

What you call "mailstream Christianity" bears little resemblance to what is described in God's word. I don't mean to attack any particular denomination; they're all in deep do-do, and we are at the point announced in Revelation where we are told to "come out of her" referring to the "harlot" that organized religion has become.