> As a first approximation, one would not expect building a suite of office tools to be more complex than building an operating system kernel. Honestly I would

> As a first approximation, one would not expect building a suite of office tools to be more complex than building an operating system kernel. Honestly I would. Kernel is not that big if you look away from all the device drivers (you usually don't need all of them) and has a focus on minimalism. An office suite is a massive complexity monster which skews on supporting more stuff even if it means having more code.