[davexunit]

GitHub's student SaSS package is the antithesis of educational. Students cannot learn, modify, and share any of this software. I see nothing but praise for GitHub in almost everything they do, but from my perspective they are doing great harm and have now directed their attention at the future generation of hackers. CS students need hackable software, free software, to learn from and build things with.

[kolinko]

So students should not use Google, because Google is not open source? How about Stack Overflow? Or closed-source hardware?

While it's important for students to be able to learn modify and share software, it's obvious that they cannot rely on open software alone.