I don't think technology is the limiting factor so much as knowing what it is about apples (or other foods) that makes them healthful.
If we actually knew how our bodies worked and what they needed, we could probably make optimally healthy foods right now.
This is a thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. The previous "stupid" questions thread is at almost 500 questions in about a month, so I think it's time for a new one.
Also, I have a new "stupid" question.