Not true. Ruby is great for a lot of stuff, but a very poor choice for e.g. scientific computing (scipy/numpy are a far better choice than the very immature sci

Not true. Ruby is great for a lot of stuff, but a very poor choice for e.g. scientific computing (scipy/numpy are a far better choice than the very immature sciruby), and plenty of other use cases where there are other "general purpose languages" that are far more suited to certain problems.