Actually, I have a very good conception of what it takes.
I was simply making a comment about the bald statistics for Mars missions: the success rate really is only about 60%. You can look it up.
I really didn't mean for the opening of my post to be so smarmy. I was discussing my amazement at what it takes to achieve Mars orbit. Sorry if I offended.
The success rate is very good considering how hard it is to do. We are becoming more proficient with each mission.
LLS