Let's face it, if you practice TDD (i.e. write tests first) and you have access to a browser and Internet connection, why would you need to memorize libraries?

Let's face it, if you practice TDD (i.e. write tests first) and you have access to a browser and Internet connection, why would you need to memorize libraries? Sure you might make a few more mistakes than someone steeped in the platform, but I just don't see it making a difference when you consider the amount of time you need to get up to speed on a new company's quirks and needs.