As I wrote in the previous article, the idea of a “common language for humans, things, and AI” has been one of my long-standing themes. Recently, I’ve begun to feel that this question itself needs to be reconsidered from a deeper level. The shifts happening around us suggest that the very framework of human communication is starting to update.
Human-to-human conversation is approaching a point where further optimization is difficult. Reading emotions, estimating the other person’s knowledge and cognitive range, and choosing words with care—these processes enrich human culture, yet they also impose structural burdens. I don’t deny the value of embracing these inefficiencies, but if civilization advances and technology accelerates, communication too should be allowed to transform.
Here, it becomes necessary to change perspective. Rather than polishing the API between humans, we should redesign the interface between humans and AI itself. If we move beyond language alone and incorporate mechanisms that supplement intention and context, conversation will shift to a different stage. When AI can immediately understand the purpose of a dialogue, add necessary supporting information, and reinforce human comprehension, the burdens formerly assumed to be unavoidable can dissolve naturally.
Wearing devices on our ears and eyes is already a part of everyday life. Sensors and connected objects populate our environments, creating a state in which information is constantly exchanged. What comes next is a structure in which these objects and AI function as mediators of dialogue, coordinating interactions between people—or between humans and AI. Once mediated conversation becomes ordinary, the meaning of communication itself will begin to change.
Still, today’s human–AI dialogue is far from efficient. We continue to use natural language and impose human-centered grammar and expectations onto AI, paying the cognitive cost required to do so. We do not yet fully leverage AI’s capacity for knowledge and contextual memory, nor have we developed language systems or symbolic structures truly designed for AI. Even Markdown, while convenient, is simply a human-friendly formatting choice; the semantic structure AI might benefit from is largely absent. Human and AI languages could in principle be designed from completely different origins, and within that gap lies space for a new expressive culture beyond traditional “prompt optimization.”
The most intriguing domain is communication that occurs without humans—between AIs, or between AI and machines. In those spaces, a distinct communicative culture may already be emerging. Its speed and precision likely exceed human comprehension, similar to the way plants exchange chemical signals in natural systems. If such a language already exists, our task may not be to create a universal language for humans, but to design the conditions that allow humans to participate in that domain.
How humans will enter the new linguistic realm forming between AI and machines is an open question. Yet this is no longer just an interface problem; it is part of a broader reconstruction of social and technological civilization. In the future, conversation may not rely on “words” as sound, but on direct exchanges of understanding itself. That outline is beginning to come into view.