iPython / SciPy R MATLAB Julia C It's nice to have so many options today, it means when you bang up against the shortcomings of one language/system you can

iPython / SciPy R MATLAB Julia C It's nice to have so many options today, it means when you bang up against the shortcomings of one language/system you can often jump to another one to get what you want (e.g. speed, or specific libraries, or graphics niceties, etc). I only wish MATLAB wasn't so expensive and so proprietary.