<p>Isn’t it funny that you can be President of the US without having to pass a security clearance, but if you want to serve the President of the US a bowl of soup, you have to have one? I understand it’s optional for party-crashers.</p>
<p>Anyway, I do know that some universities will do research with private companies that require them to sign NDAs. Linus Torvalds was critical of schools that would team up with Microsoft, and require their students to sign documents agreeing to keep the source code secret.</p>