He didn't say "it never could": he said "it never really could." The VM feature was always experimental. If you're interesting in reading more, there's some go

He didn't say "it never could": he said "it never really could." The VM feature was always experimental. If you're interesting in reading more, there's some good discussion at http://news.ycombinator.com/item?id=2606096 http://news.ycombinator.com/item?id=2606096