[usrbinbash]

> Sure, but at the other end of the spectrum you get "know a guy" interviews

And code puzzle style interviews prevent that how exactly?

If the boss's boss want's his golf buddys friends nephew hired, goes to HR and says "hire that person", then that person will go through the same interview process as everyone else, presented with the same puzzle questions as everyone else, and do as good or bad as his preparation allows him to do, just like everyone else...

...and then get hired no matter what, because, just like everyone else, HR people want to keep their jobs as well.