Jenna, great point. In fact I find it important to remind students that the most advanced scientific leaders of any time frame were certain beyond any doubt that their view of the universe was the correct one and history tells us a great story that each new generation just finds the facts of yesterday NOT to always be the truths of today. Science is about the pursuit of knowledge but only a fool things they have the absolute answer to anything until it is 100% accepted over the generations of peer review and scientific methodology. For example, we have known now for years that there is a force called gravity and we know it basic behaviors. We are finding out still today however that under various types of conditions the laws of gravity are not as constant as we once believed. Fascinating stuff and provides for great conversations on both sides of the religion versus evolution issue. James Jackson