When one gets buried in a problem, it's easy to forget the simple things. Sometimes you sit there scribbling down complex calculus, trying to find the sin of the sum of the square root of xm + yn all to the power of pi, divided by the volume of the nearest black hole measured in imperial units exclusively, only to find out all you were looking for was a + b. It's one of those moments where you kick yourself for missing it earlier, but you had to go through the hell you went through to actually arrive at the simple solution. So infuriatingly simple that you have an overwhelming desire to play the most expensive game of frisbee you can, and send your laptop crashing into the aforementioned black hole.