The Prius conundrum

And the short-sighted homeowner

IF YOU ask me, the real Prius condundrum is how exactly one pluralises the word Prius. It's remarkable to see the lengths to which journalists will go in order to avoid referring to more than one of the trendy little hybrids. That's not the condundrum Felix Salmon has in mind today in responding to Dan Ariely, author of Predictably Irrational, who writes:Why do we buy a Toyota Prius but do not take as much care to make our homes more efficient?Mr Salmon's response is a good one. In short, residence in any one home is increasingly a short-term phenomenon. Given the upfront costs of investments in home efficiency, one would need to reside in the improved home for some time

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