I've been working on Birch a lot in the past week or so, and I'm almost done with the second of three skeins of KidSilk Haze. And I'm suddenly absurdly afraid of running out of yarn. I mean, it's not totally absurd, because I have heard of people running out of yarn with this pattern. But I have no actual evidence that I'm about to run out. I haven't done any calculations or anything. My solution seems to be to knit as much as possible, as quickly as possible, because then at least I'll know. Right?