It's not really a default though. You have to always choose to do `using` instead of `import`. A lot of people choose `using`, because it's generally more safe

It's not really a default though. You have to always choose to do `using` instead of `import`. A lot of people choose `using`, because it's generally more safe than something like MATLAB or Python because of multiple dispatch, but there's nothing in the language that actually defaults to `using` other than the convention of some people.