The specific quote was "We’re planning to put a replacement chip on the market to go up against flash within a year and a half"
and "We have a lot of big plans for it and we're working with Hynix Semiconductor to launch a replacement for flash in the summer of 2013 and also to address the solid-state drive market"
June 2013 is twenty months away, so "a year and a half" is a very reasonable approximation, which it looks like the article writers then approximated again as "18 months"
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The specific quote was "We’re planning to put a replacement chip on the market to go up against flash within a year and a half"
and "We have a lot of big plans for it and we're working with Hynix Semiconductor to launch a replacement for flash in the summer of 2013 and also to address the solid-state drive market"
June 2013 is twenty months away, so "a year and a half" is a very reasonable approximation, which it looks like the article writers then approximated again as "18 months"