Balance

Remember that pivotal race that led to the Mane Six getting their cutie marks? Well what would've happened if Fluttershy had managed to keep herself on the cloud...?

When Rainbow blasts off during the race that got her her cutie mark, Fluttershy lost her balance and fell to the ground. Here she met all of her animal friends and got her cutie mark. Every brony knows all that. But what if Fluttershy had caught her balance? What would've changed?