Why does Blue Ocean Brain require a username and password to log in?

Individual accounts are necessary to ensure that each Learner's Blue Ocean Brain experience is unique.

Having a unique account allows your Learners to track their own Blue Ocean Brain (BOB) points and usage statistics through their own individual My Learning page. It also allows Learners to customize their Blue Ocean Brain experience by changing their account settings through their own individual My Settings page and saving their favorite Lessons, Articles, and Quotes to their personal Bookmarks page.