You can release the source code without any license. Adding a license means you want other people to "license" it from you - I.E. using your code. The GP actua

You can release the source code without any license. Adding a license means you want other people to "license" it from you - I.E. using your code. The GP actually quoted the article "and solves most of the problems that held that back from wider popularity." Which imply the author wanted people to adopt it. I'm assuming it wasn't about other academics adoptions but of hobbyists and commercial ventures.