"It's open source software, which means it's largely unfinished and you can't guarantee that all the math routines are actually doing the right thing." Um... I

"It's open source software, which means it's largely unfinished and you can't guarantee that all the math routines are actually doing the right thing." Um... I think you have a better chance of guaranteeing a routine works when you can inspect what it's actually doing below the hood. Something like MATLAB is based completely on trust (albeit, deservedly).