The quote highlights the idea that while efficiency is important, it should not be the sole guiding principle in life. If we focused only on efficiency, our experiences would be monotonous and lack joy. This is exemplified by the notion of consuming the same bland meals daily, which, although nutritious, would make life dull and unexciting.
Alexander McCall Smith suggests that variety and pleasure are essential to the human experience. Life should not just be about survival; it should also encompass enjoyment and richness. Embracing diversity in our experiences, just like in food, can lead to a more fulfilling life.