Sigh… I feel like I should know the answer.
I am going by the Knitter’s Almanac. There seems to be a mostly straight knitting version, and then EZ offers instructions for one with concentric holes, and then some lace patterns. Which is the one that makes the “classic” Pi Shawl (I think?) with the big flower and diamond-esque motif?
Borrowed from Ravelry:
ETA: I’ve been trolling around Ravelry, and I think it just hit me that you do ALL of the lace patterns, first one at 144, second at 288, etc (I read it as if you do pattern 1, start it at 144 sts, if you do pattern 2…) This makes sense now, though, is that right?
Also, how do people decide what size needles to use? I’m baffled! With laceweight yarn, Ravelry projects vary from size 5 to 10-1/2…
P.S. Mods, if you happen to read this, are we permitted to “borrow” pictures like that (second time I have this week, I think)? I don’t want to break any rules or offend anyone. Thanks!