Definitely a dysfunctional company, as all news items point to.

UberEverything engineer interviewer:

His lack of knowledge most likely is why I didn't get past the coding phone interview. He thought there was a retain cycle in my code (there was not, though a one-way reference was kept). He thought sending a message to nil would cause a bad access exception, and he didn't understand part of my API functionality until I explained it to him at the end, when he said, "Okay, that's a valid use case."

In hindsight, he generally did not understand my solution; he interpreted the code incorrectly. Talk about thinking on the fly...

Design a NSNotificationCenter API that accepts blocks.