Daily miscellanny: We've never had it so good

1. Megan McArdle says that from cooking to woodworking, rising levels of skill and effort have become barriers to entry.
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3. Kevin Rose talks with Ryan Holiday about Stoic philosophy.
4. An increasingly influential group of thinkers insists that humankind has never had it so good – and only our pessimism is holding us back.
   • The proportion of the world’s population living in extreme poverty had fallen below 10% for the first time.
   • Global carbon emissions from fossil fuels had failed to rise for the third year running.
   • Child mortality is roughly half what it had been as recently as 1990.
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