SPS vs LSP

My personal review of Criswell's LSP plan indicated to me that it had a higher chance of success than straight SPS in the short run. Do you define "straight SPS" as components manufactured on Earth and then launched via some HLLV, or as GEO SPS from lunar resources? I might have to allow that the former plan probably has fewer unknowns (although I would still insist that any SPS program large enough to make a significant contribution needs to transition to the latter scenario as soon as practical). But it always seemed to me that Criswell's plan involved all of the High Frontier uncertainties of establishing industrial infrastructure from scratch in a hostile environment remote from Earth, without any of the continuous operation advantages of GEO SPS. I really like the idea that things stay put and don't fly around needing maintenence and orbital correction. Youhave to faceconcerns about anything in the thousands of tons range anywhere save the surface of the moon and L4, L5. This is the "stability" argument that I hear quite a bit, but I tend to view it as a bias. Look at it this way: Which is going to impact profitability most profoundly - occasionally requiringasmall burp from some kind of RCS jet, or your power plant being out of commission for 2 weeks out of every 4? (Or alternately, having to build 2 power plants on the moon for every one needed in GEO?)