Knitting a Tube on Straight Needles

I read recently that you can't knit a tube on straight needles. Yes, you can! And I don't mean that whole double-knitting-with-two-strands thing.

Cast on an even numbers of stitches. (Okay, use an odd number if you want to, but an even number will make things easier.) Knit one, slip one purlwise with the yarn in front. (That's K1, S1P, if you need an abbreviation.) Repeat these two steps to the end of the row. Turn the (straight) needle, and repeat the row. Keep going for a few more rows, and you'll see what I mean.

It's slower than working on dpn's or circs, and you'll probably end up with a looser fabric, but it really is possible.