The future financial prospects for personal computing haven’t looked so hot in recent months, but the recent launch of Windows 8 raises another concern entirely: forget about assessing the PC from a business perspective, does it even work from a design perspective anymore? Reactions to the new Windows operating system doubt the longevity of the standard “Windows” mentality for computing: It’s not quite right to say that Windows 8 kills windows, because as Microsoft takes pains to point out, most Windows 8 machines will still be able to run every Windows program ever written. (The exception will be a new…