I think what shocked me the most about that debate was how much the phpng developers tried to undermine Pierre Joye, by even contradicting their own goals. In

I think what shocked me the most about that debate was how much the phpng developers tried to undermine Pierre Joye, by even contradicting their own goals. In particular, their primary advertised concern was on the 4% increase in memory usage - but the whole purpose of phpng seems to be to make PHP more compatible with JIT compilation later on - and that seems to almost universally requires large amounts of memory to work really well.