In Peg Bracken's I Hate to Cook, she makes the point that if you have a favorite recipe, but you get lazy about making it over time, substituting this and that, pretty soon you find yourself wondering why you ever liked it. My sister and I discussed this years ago when we noticed that a popular recipe exchange site was full of comments that changed everything. For example, a peanut butter and jelly sandwich might have the comment: "Loved this! Swapped a fried egg for the peanut butter and cheese for the jelly, and oh, I didn't have any sandwich bread so I used an English muffin. Will make again!" I'm sure your breakfast sandwich was delicious, but what does that have to do with a recipe for pb&j?
That said, I still managed to do the same thing. I saw a delightful little girl's dress at a knitting shop, bought the yarn and pattern, started in quite happily, and then had the not-quite-scathingly brilliant idea to pick out the flowers by purling them whenever the pink came along in the yarn.
Not at all the look I was going for. Purling is more complex than I give it credit for. I did learn that yarn travels away from me as I knit. That is, if a stitch was half pink on the far side of the stitch, it would become all white when purled. If it was half pink on the side of the stitch closer to me, it would become all pink when purled. Academically interesting, and no doubt related to the improved way I just learned to execute an SSK, but of no help to the dress. Back to the recipe as written:
Ah, much better.