All By Myself
Ignoring the fact that this is incorrect from a biological standpoint, the first cells were most likely very isolated. But in the end, they were able to locate one another, and everything worked out perfectly!
Algebra
Algebra is a subject that nobody enjoys, least of all Peter, who thought it would be a good idea to take the word “expand” very literally on his test. As a result, he expanded the equation, which was the exact action that was required of him by the problem.