It is too easy for us to lock on to past performance or position.

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"A lock is easy to break, " said Pedro Cedraschi, a 58-year-old Argentine, as he pushed a cart in the Miami airport piled high with three gleaming emerald bags.

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It was impossible to find a position that allowed this reviewer to stretch across the screen with his thumb while keeping the lock key within easy reach.

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It won't be so easy for a chip supplier to lock a customer into a particular chip.

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The multiple user support is especially handy for tablets like the new Nexus 10, which are much more likely to be shared, and now offer quick and easy user switching right from the lock screen.

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Walking through, it is easy to forget that women spent their entire lives here under lock and key.

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Even with that island-style arrangement, there aren't many undersized buttons here -- the Enter, Shift, Backspace and Caps Lock keys are all full-sized, and easy to hit without looking away from the screen.

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If you're a sleep texter or afraid of becoming one, the easiest and best solutions are the most obvious: Turn off your phone, set your passcode lock or place it on the other side of the room so it's not within easy reach.

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