Just because they're in the same bin in the big-box craft store and seem to be the same doesn't mean they are:
I realized I didn't plan gifts for my sisters this year and we'll be spending it with them so that would be a huge oversight on my part. A pile of 50% off coupons from Jo-Ann's and I have materials for quick scarves for them, scarves I've seen a lot of undergrads wearing on campus so they shouldn't be too uncool. I realized when I got home, however, that I'd grabbed an old version and a new version of Jiffy in Fisherman, and they are noticeably different. Oops!