Google Glass has faced continual criticism over its polarizing design, potential privacy issues, and the high price of units–all before the product launches. But according to the Glass marketing head, these complaints are just a natural outcrop of Googles ambition and willingness to try something different. I see it as quite a necessary symptom of a company thats trying to be disruptive, Googles Ed Sanders told Forbes, He attributed the backlash to the way Google chose to roll out Glass — a limited public beta that kept a shroud of secrecy around a product that generated a ton of hype.