In some lacy patterns, the number of stitches varies, on others it stays the same. One way to tell is to count the number of increases and the number of decreases in a row. If they offset each other, then you should have the same number of stitches that you started with.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry