Open the hood of almost any gasoline-powered car, and you'll find a bunch of cylinders doing essentially the same job: sucking in air, mixing it with fuel, compressing the mixture, igniting it, and pushing the pistons back down.
So here's a question that seems simple but gets surprisingly complicated: Why aren't all engine cylinders the same size? After all, a bigger cylinder holds more air and fuel, while a smaller one holds less. Wouldn't it make sense to simply pick one ideal size and use it everywhere?
