> I only had the chance to review their personal websites or github profiles > Many are not able [..] to explain why and how a clearfix works, or what ARIA rol

> I only had the chance to review their personal websites or github profiles > Many are not able [..] to explain why and how a clearfix works, or what ARIA roles are for I don't understand what the author expected to learn by browsing someone's hobby projects/personal homepages, without seemingly engaging in a discussion with the person who wrote the code.