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 Apple's second-generation smart glasses with an in-lens display may have two modes, depending on which device they are connected to.
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 Whether it's avoiding the news or checking a bank account, adults often deal with uncertainty by switching off and not seeking knowledge - even when that knowledge could be of benefit to us. Now scientists have identified just when in life we start to choose the "ignorance is bliss" path, opting for comfort rather than uncertainty.
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