Originally Posted by TomQ
On UNIX permissions ...
Do tell me how bad permissions will cause things like graphics corruption, surround-sound issues, etc. etc. UNIX permissions are not this mysterious voodoo that trigger all sorts of issues if they're not all 100% dandy. I do UNIX system administration for a living. I know what I'm talking about.
On protected/virtual memory ...
I think what I'm talking about may be a bit out of your league of knowledge/understanding, and that's fine -- I'll accept that.
What I won't accept is someone who has no idea what they're talking about telling me that I'm wrong. I'll stand by this: Userland processes are forbidden from directly accessing system memory. Userland processes' memory addresses in a modern, protected-memory OS like OS X or Windows NT are virtualized, and then translated to physical addresses by the CPU and its TLB. Google this.
I am afraid you may be wasting your time here as you are talking to people that place little or no value at all on actual experience. What seems to be taken as gospel is what is solely found by Googling any given subject. Be careful with your suggestion. The application of deductive reasoning, scientific method, skepticism or even plain old common sense on what is found on the Internet seems to be lost here.
If by chance you read most of this thread, you may have noticed my little dispute with melgross over whether data on a hard disk can be "flipped" or decay by merely sitting on a shelf or having been exposed to 'cosmic rays.' My 20+ years of experience to the contrary was rapidly dismissed and it was suggested that I am a lazy fool that wants to look ridiculous for not offering a Googled response. In the meantime, I have casually queried the administrators of data centers of the trading firms I deal with worldwide about this and was laughed at every time for merely suggesting such utter nonsense. I explained to them why I had to ask.
They did tell me something interesting, though. Regardless of how failsafe any data storage medium is claimed to be, should that really alter your redundancy planning? Backups should be regularly done regardless whether the drive has a MTBF of 1 million hours or 1000 hours.
So, the whole argument was really moot, wasn't it?
Enjoy your Holidays.