One benefit of studying physics and engineering is that it gives me some insight into the difference between the theoretical and the practical.
For example, although quantum physics and general relativity give a better theoretical description of the universe than Newtonian Physics, every bridge, plane, dam, and house built is based on Newtonian physics. Why? Because in the real world, Newtonian physics is a better tool.
That’s how I feel about using a Venn diagram representation of ikigai. Although I don’t believe a Venn diagram of ikigai accurately represents the concept of ikigai, I do think it is a useful tool for most people, most of the time, when thinking about their ikigai.
Now, there is philosophical value in considering the deeper meaning of ikigai. For me, this would include a study not just of current Japanese culture, but of ancient Japanese culture, the fluidity of the Japanese language over time, the relationship of the Japanese language with the current digital language of the world, and the study of the philosophy of language itself, especially concerning a theory of definitions.
But, as intellectually satisfying as this is, how is this helpful practically? How can it help me make a practical decision on a tricky career decision or on a bold physical relocation?
I would suggest that here, in the practical domain, it’s better to consider ikigai like an engineer—to use a tool at hand best designed to do the job—and that tool is the Venn diagram.