I have a feeling this is the 80/20 rule. It's fast now, because it doesn't actually do everything, it's a sample. Once they actually implement that final 20%,

I have a feeling this is the 80/20 rule. It's fast now, because it doesn't actually do everything, it's a sample. Once they actually implement that final 20%, they'll realize it's harder than it looks, i.e. it's slower than before. Things like cache coherence, thread isolation, hard stuff like that.