One Hand Clap
Nikolai Kukushkin

Swift Press (UK);
Prometheus Books (USA)

“If you create a sound by clapping your hands together, what sound is produced by clapping just one hand?”

At the start of his book, neuroscientist Nikolai Kukushkin asserts that if you meditate on this Zen Buddhist koan (a paradox utilized for training Zen monks) long enough, it might unveil the roots of the mind and even human experience.

Yet, as many Buddhists recognize, the path to enlightenment is often lengthy and arduous, although it is ultimately fulfilling. One Hand Clap is no different.

The book, initially published in Russian, has been translated into English by the author, who is presently affiliated with New York University. In it, Kukushkin delves into the origins of life and its evolution across a notably varied spectrum. He encourages us to contemplate origin stories through what he terms the idea or essence of nature, rather than a simplistic reductionist approach.

With an understanding of the subtleties of such terms, Kukushkin asserts: Idea If you find that term unsettling or unscientific, you may simply refer to it as essence: Natural Ideas: The Rational Outcomes of Choice.” He relates this to Plato’s concept of the Idea of Nature, known as Eidos or essence.

Through this lens, hydrothermal vents—his favored locations for the origin of life—transform from mere porous rocks and flowing liquids into patterns of activity observable throughout nature. For instance, existence demonstrates a tendency to become progressively intricate by tapping into greater energy sources. This dynamic is common to deep-sea vents, photosynthetic cells, and humans utilizing fossil fuels.

Other essences differentiate between movement and freedom, or desire and preference. However, I discovered that Kukushkin’s research on the sea slug Aplysia revealed how this unassuming creature devised abstract concepts vital for its survival, offering the clearest demonstration of this capability.

The book spans multiple pages and describes interactions among sensory neurons, motor neurons, muscles, and the siphon, which is a crucial respiratory organ on the slug’s back. Kukushkin notes that each neuron’s activity conveys a “different meaning,” such as “touching the tail” or “touching the body regardless of location.” When the slug learns the sources of potential danger (considering that the siphon must be safeguarded at all times), it employs the abstraction of “dangerous contact regardless of location” to make suitable decisions.

Kukushkin argues that similar patterns of abstraction and identification underpin our thought processes, albeit with greater complexity in the human mind. On this foundation of simple abstractions, we build numerous additional concepts that shape every facet of experience, from vision to language.

One Hand Clap encompasses a vast array of topics, giving it the feel of an engaging lecture series peppered with humorous sketches. Some may find Kukushkin’s joviality somewhat excessive. Yet, don’t dismiss it.

Contemporary scientists often refrain from attributing rationality and creativity to biological or chemical systems, steering clear of concepts involving agency and direction in life. Kukushkin highlights that ancient thinkers faced no such dilemmas. Recently, there has been a revival of ideas among certain biologists suggesting that evolution may, in a sense, occur “on purpose.”

Scientists might worry that this perspective resembles pseudoscience or the “intelligent design” of a religious faction. However, especially when tackling profound questions like the origins of life and consciousness, we may need to revisit concepts that provoke discomfort by association.

Despite being constituted of the same matter as the physical world, our subjective experiences involve something remarkably distinct—the “hard problem” of consciousness.

For Kukushkin, the resolution is found in a long arc. Eidos spans from atoms to cells to brains, being objective in their existence “out there.” However, we usually perceive abstraction as internal and subjective. “What if subjectivity is merely an intricate form of objectivity? What if every notion is an essence?” he contemplates.

This is an ingenious attempt to argue that objectivity and subjectivity are two aspects of the same phenomenon. If contemplated thoroughly, Kukushkin asserts, complex problems can be resolved. Personally, I find the phenomenal nature of conscious experience, which intertwines our senses, emotions, and thoughts, more comprehensible when viewed through this lens. However, I wrestle with appreciating how it can bridge the divide between subject and object entirely.

This conundrum may never find a resolution. Yet, for now, One Hand Clap serves as an enlightening koan: the journey toward understanding is often more significant than the understanding itself.