US constitution is not a moral or criminal or other type of code for all cases of light. It does not forbid, for example shoplifting or driving on red light.
0.999… means the value of the limit of a sequence {0.9, 0.99, 0.999, …} as number of 9s (or length of a sequence) goes to infinity, and the limit is very clearly 1 in my mind.
I said upvoted post on kbin. Not posted on kbin. I might be wrong, but I think I see only kbin upvotes and downvotes. Right now I see 6 upvoted and 1 downvote to the post you have replied. How much do you see?
Well yeah, things improved. I guess the real difference is that the smart phone is actually a mobile general purpose computing device, which, by the way, also makes a call. My reason for buying iPhone 1 was to combine two devices in one - iPod and mobile phone. I did not expect that e-mail, web browsing and camera were so good. But the real game changer was an App Store, which came later.