Name yourself or stop with the ad hominem attacks. Thanks.
You know nothing about my situation, nor why I left Google. Please stop speculating. Even I never found out what calibration score I got. My manager promised a 3.4, gave something lower (his boss confirmed) and it was being appealed at the time I left. Call it -6.2 for all I care.
I was in the process of internal transfer and it was going alright; however, I got an offer from another company and left. I figured that a clean start would be better than an HR file that, while it wouldn't affect me in the short term, would have long-term implications come promo time and that it'd take months of grueling, bureaucratic effort (some of dubious ethical character) for me to fix.
It was like this: Option A is that I transfer, stay at Google, but may have an early-term smear of my Perf history and might have to cut bribes to people with HR database access in a few years when I rise to a level where even early, cosmetic, irrelevant stuff counts. Option B is that I get another job. Option A is unethical and unlikely to work. Option B is much easier. So I chose B.
Some time after I left, Google did something about a few horrible managers on the issues that I'd raised, but I don't know how much progress they've made and it makes no damn difference to me at this point.