We follow up on updates to Apple's UI Design Guidelines, the History of MS-DOS, and the cities vying to be Amazon's second head quarters. We also discuss the IRS's contract with Equifax and Netflix' PR issues with respect to Canadian taxes. We cover the improved display of fatal errors in Xcode 9. The reverse engineering of High Sierra's supplemental update exposes a flaw. iOS privacy has also come under fire as proof of concept by Felix Krause demonstrates the ease of stealing an Apple ID password. Picks: Useful Xcode breakpoint and the Memory Graph Debugger