From The Mouth Of Babes
As My 11 year old daughter said after reading your posts "Why do you keep changing the subject". You demonstrate your lack of ability to distinguish science from Pseudoscience and your adherence to pseudo-science tactics yet again. No engineer at NASA that I know of has claimed Zubrin's work is not technically feasible. The technical issues surround better alternatives, political feasibility, and the margins of safety required. Zubrin is an engineer. You are certainly not.
Regards,
Mark