w3c/wcag — pull request #9 by anormand (2014-02-13 12:47:41+00:00)
Title: Update ARIA-tech-src.xml

I understand what the author is getting at but 'there is no a priori knowledge' is better expressed as 'there is a posteriori knowledge'. Even then I am not sure that this phrase makes sense. Given that many developers have English as a second language, I don't think that the use of Latin is helpful.