The article focuses on stealing vs. copying, but both of those terms imply awareness of the source material. There's a grey area of "copying" where you design s

The article focuses on stealing vs. copying, but both of those terms imply awareness of the source material. There's a grey area of "copying" where you design something while being unintentionally influenced by something else. But I suspect most of the derivative logos in the article are instead examples of similar outputs from complete unique, separate, and unrelated processes. In other words, DesignStudio may have never seen or encountered the Azuma Drive-In logo when developing the AirBnb logo. That's not copying: that's happenstance. With logos in particular, there's a finite universe of picograms and shapes, particularly when you're building off a letterform. There's bound to be collisions that are due to neither stealing nor copying.