Originally Posted by vmatt1203
I was going to say.If I learned anything from KSP its that engines have a different effect under atmospheric conditions as opposed to when in space. You would just be waising fuel if you fired this up in space...
I adore that game.
KSP hasn't so much taught me anything so much as given me the "ah ha!" moment for a lot of things I "learned" in school. Putting the concepts to practice really is the difference maker. XKCD pretty much sums it up best.
In relevance to this thread, One of the things KSP taught me was that the hardest part of every mission, especially interplanetary missions, is getting everything into orbit. That's where the SLS comes in (also why the spaceX recovery system is so awesome).
Building an infrastructure to build things in space is cool but not necessarily practical. You still need a heavy lift rocket to get the infrastructure into orbit. You still need a heavy lift rocket to get the parts/raw materials into orbit. In reality it's more practical to build the parts down here on earth and only do final assembly of large things in space, a la ISS.