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ISP: Sprint 3G Location: Atlanta, GA


When you first release a product/feature, the people that are going to really use it are the "early adopter" crowd. Once they embrace it, then you can spend the capital to roll it out to the later adopters. I'd be willing to bet that Android has far fewer early adopters than iOS.


One thing precludes the other, though. How can Android users be early adopters if apps are consistently released on iOS first?


There's also a major fragmentation problem with Android: Evernote can look at the iPhone 4 sales figures and know that they'll have so many million potential users with the same hardware and OS; with Android they have to compare a ton of different models to see which ones have a usable camera and whether the vendor + carrier are holding up OS releases. If you want to prove an idea that's a lot of extra work.


You do realize that these things cost real money, right? Costing money for meaningless, valueless endeavors makes a business's overhead go up. When the overhead goes up, it has to be cut in other ways, usually by cutting employees. Unfortunately, that's difficult in France, which is why he is complaining. It's not sociopathy, it's business.


Meaningless, valueless endeavors like the once-a-week meeting that Haan was terrified of having to have with representatives of his own workforce? Or is government mandated profit-sharing the meaningless valueless endeavor?

Somehow, inexplicably, these pernicious overheads never manage to take a significant toll on of executive compensation, perks, and the like.


That's actually an incorrect way to think about it. Actually, Dropbox is paying for the free accounts, in an attempt to convert people to paying accounts.

Dropbox is simply offering a product which is priced around where supply and demand meet. I'm sure if Dropbox believed that they could make more money by increasing or lowering the price, they would. By paying for Dropbox, you're not paying for the free tier, you're paying the price that you think Dropbox is worth. It just so happens that Dropbox can make a good profit at that price point, even with the cost of the free accounts.


I believe that would have far-reaching implications, seeing that Sudoku has been proven to be an NP-Complete problem.

http://en.wikipedia.org/wiki/List_of_NP-complete_problems#Ga...


Proving something about a NxN grid does not have much to do with a problem being NP-complete.

For example, the fact that it is not very hard to proof that a 1x1 sudoku requires 1 clue does not prove that sudoku is not NP-complete.


Surely a 1x1 grid requires 0 clues?!


A classic off-by-one error. That is not what I was thinking of, though. A 2x2 grid requires a single clue.

A 3x3 grid requires 2 (1 and 2 across a diagonal suffices)

So, we have a sequence 0,1,2,?,?,?,?,?,17,...

I checked the OEIS, but it does not seem to contain this sequence. Does anybody know more values?


It's not really valid to treat this as a sequence, since most side lengths don't form what we think of as a Sudoku puzzle. The side length of a true Sudoku must be a perfect square in order to create the interior boxes that are (geometrical) squares. For the counterexample, think of a 7x7 puzzle (or any prime)... how can a square box contain seven cells?

A 4x4 puzzle gives you four 2x2 boxes. The standard 9x9 puzzle gives nine 3x3 boxes. A 16x16 puzzle gives sixteen 4x4 boxes. Sudoku variations sometimes have rectangular boxes; a 6x6 puzzle can have six 2x3 boxes, or a 12x12 puzzle can have twelve 3x4 boxes. But that is a different form of constraint logic so we shouldn't expect that the minimum number of clues for these sizes would follow a recognizable sequence.


I had to check Wikipedia (which, as we all know, always is right :-)) to see that you are right. I have seen so many variations on sudoku's that I forgot what the original looked like. I was just thinking of Latin squares.


No because then you wouldn't be able to arrive at a fixed solution there would be 9 solutions with 0 clues.


In a 1x1 grid you would only use one digit, not 9. A 1x1 grid requires 0 clues, a 2x2 requires 1 clue.


(tongue in cheek) right, a 1x1 grid requires 0 clues, it has only a single digit as its solution; that digit is -- [its_so_on looks left, cut to SatvikBeri]


That digit is a 1, since for an NxN grid the values are 1 through N.


I'm not sure what the "Rules of Sudoku" say but I assumed any single symbol of the solvers choosing would do.


I used to drink a couple cups of coffee a day, but felt jittery and then had some pretty intense lows that made it hard to focus and enjoy work. I replaced that with a couple cups of green or oolong tea a day and it's done wonders for me in terms of jitters and lows. No long do I feel like I'm going to jump out of my skin or like I just want to take a nap while trying to concentrate on what I'm doing.

I highly recommend trying some tea if this sounds familiar. Green and oolong tea have significantly less caffeine in them than coffee, and it's just as fun, if not more, picking out good teas as it is picking out good coffee.


Thanks for sharing.

But be aware that black tea and green tea often have the same caffeine content. The trick is to make your tea weak.


Some stats comparing caffeine content in tea.

http://www.stashtea.com/caffeine+and+tea.aspx


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