We would if it said so in the Bible. Remember this argument breaks into 2 essential parts: "The Bible Says So" and "it is too complicated." My argument addresses the first. Let me then move on -- how about the theory of Gravity? String Theory? There are significant debates about these within the scientific community, but the foundations are available as science.
This is the problem. You want evolution taught in the same absolute format as mathematics when it just ain't so. Evolution, as it pertains to the origin of man, is not in any way similar to the mathematic certainty that 1+1=2. To believe that it is - which is really what this debate is all about - takes much more faith than believing the Bible. When the real mathematicians point out the almost statistical impossibility of man resulting from some single cell organism - they are not allowed in the classroom because it is not science.
Show me one accredited publication where such a statement is made.
Your comparing evolution to the certainty of mathematics lifts the veil and exposes the problem that most evo's have. It is a "theory" in no way comparable to other scientific or mathematical facts. I know - now I'm going to have explained to me what a "theory" is for the thousandth time.
1. I was being exemplary, but nonetheless evolution belongs in the science milieu, creationism belongs in the philosophical one. Your complex strawman attacking evolution does not resuscitate Creationism as an "alternate theory." Creationism is mythology.
2. You don't get to frame the debate by stealing the terms (I judged debate for many years). You can post what you think is a "theory" until the cows come home.
He is most certainly free to do exactly that.