Knitting Pet Peeve #1

So there I was in the park, knitting nothing in particular. I just grabbed a skein of yarn and some needle to bring with me so I would have something mindless to do while watching the kiddies play. I cast on a few stitches, knit a couple of rows, then this:
Why oh why do they do this to us. I had been knitting for maybe 5 minutes when I came upon this knot. It's not even a good knot. It's a granny knot. I could unpick this with my bare fingers. If they're going to have the nerve to knot a teensey piece of yarn on the end of an almost full skein of very slippery acrylic, the least they could do is use a decent knot to do the job.