I am confident that almost nobody on HN will confuse Tim Sweeney for Tim Cook. Also, this is similar to lingo usage, not everyone will know what PHP is, but tha

I am confident that almost nobody on HN will confuse Tim Sweeney for Tim Cook. Also, this is similar to lingo usage, not everyone will know what PHP is, but that doesn't mean we should start adding wikipedia definitions into the titles. People who are unaware can do some research to find out, and the rest of us won't be subjected to annoyingly verbose titles. Additionally in this specific case the first sentence of the article explains who Tim Sweeney is.