Does knitting with 2 circular needles on the round result in the same knitting as knitting with 3 double-pointed needles on the round? I want to begin working on a pattern that requires 2 circular needles. However, don't you obtain the same results with 3 DPNs? (I want to know if it's absolutely neccesary to get other circular needles, or if the pattern can be adapted to DPNs. I find circular needles stressing, since the cable is just too long.)
Also, what does it mean to "place stitches on waste yarn"? From what I understand, the stitches "placed on waste yarn" remain unactive for a few rows, and then they are picked up later. How do I "place stitches on waste yarn"?