[fennecfoxen]

I'd like to second the "practicality" angle; I couldn't muster enough fuel and thrust to get a 2-module space station (two Hitchhiker modules) into orbit without the rockets blowing apart from instability. But the single-module guy is cruising along just fine right now.

Rocket science: Apparently it's hard. Who knew?

[exch]

This warrants the obligatory XKCD quote[1]: "Space is hard"

[1]: http://what-if.xkcd.com/38/

[exch]

daurnimator: It is on the last image.

[daurnimator]

no such quote on linked page

[eavc]

It's written on the ship in the final image.