On the same day, John Browett, who was SVP of retail, was dismissed immediately after only six months on the job. Neither Forstall nor any other Apple executive has commented publicly on his departure beyond the initial press statement, but it is generally presumed that Forstall left his position involuntarily. All information about the reasons for his departure therefore come from anonymous sources. Cook's aim since becoming CEO has been reported to be building a culture of harmony, which meant "weeding out people with disagreeable personalities—people Jobs tolerated and even held close, like Forstall," Although former Apple senior engineer Michael Lopp "believes that Apple's ability to innovate came from tension and disagreement." Steve Jobs was referred to as the "decider" who had the final say on products and features while he was CEO, reportedly keeping the "strong personalities at Apple in check by always casting the winning vote or by having the last word", so after Jobs' death many of these executive conflicts became public. Forstall had such a poor relationship with Ive and Mansfield that he could not be in a meeting with them unless Cook mediated; reportedly, Forstall and Ive did not cooperate at any level. Being forced to choose between the two, Cook reportedly chose to retain Ive since Forstall was not collaborative. Forstall was very close to and referred to as a mini-Steve Jobs, so Jobs' death left Forstall without a protector. Forstall was also referred to as the CEO-in-waiting by "Fortune" magazine and the book "Inside Apple" (written by Adam Lashinsky), a profile that made him unpopular at Apple. Forstall was said to be responsible for the departure of Jean-Marie Hullot (CTO of applications) in 2005 and Tony Fadell (SVP of hardware engineering) in 2008; Fadell remarked in an interview with the BBC that Forstall's firing was justified and he "got what he deserved". Jon Rubinstein, Fadell's predecessor as SVP of hardware, also had a strained relationship with Forstall. After Jobs' death in 2011, it had been reported that Forstall was trying to gather power to challenge Cook. The Siri intelligent personal voice assistant that Forstall introduced in September 2011 has received a mixed reception with some observers regarding it as a "flop". Forstall was vigorously criticized after the new Maps app, introduced in iOS 6, received criticism for inaccuracies that were not up to Apple standards. According to Adam Lashinsky of "Fortune", when Apple issued a formal apology for the errors in Maps, Forstall refused to sign it.