Introduction
Melanie Challenger's book Alive challenges the mechanistic perception of biology. The author argues that life is not merely chemistry, but a continuous process of embodied agency. Every organism possesses an internal system for valuing the world, which allows it to survive.
The reader will learn how to push the boundaries of subjectivity beyond human rationality. We will explore the concepts of Umwelt and the psychoscape, which redefine the ecosystem as a weave of individual biographies and experiences. This is an invitation to a new ethic of nature conservation.
Life as a System of Biological Valuation
An organism's reaction differs from a mechanism's operation by the presence of an internal frame of reference. A thermometer records temperature, but that temperature is neither good nor bad for it. A living cell, however, assigns a plus or minus sign to physical changes depending on its own interests.
This biological valuation ensures that the world ceases to be indifferent. An example is the chemotaxis of Escherichia coli bacteria. Despite lacking a brain, it can modulate its movements to reach food. This proves that agency and horizontal intelligence exist independently of a nervous system.
Biological Self-Interest as the Foundation of Subjectivity
Every being that strives to maintain its own integrity has interests. Self-interest does not require rationality; it is the capacity of a system to regenerate and fulfill its life cycle. Therefore, we can speak of harming an animal or a plant, even if they do not formulate theories regarding their own well-being.
Contemporary ethics should move away from anthropocentrism. Treating animals as statistical ecosystem services ignores their individual biographies. Instead of asking about their similarity to humans, we should examine what, in the specific way of being of a given creature, is susceptible to destruction.
Perception as Biological Valuation of the World
Senses are not objective cameras. They act as filters that capture only information relevant to a specific body. This creates the Umwelt—a functional world in which an object is defined by possible actions, known as affordances.
Perception grows out of metabolism and the evolutionary need for survival. Memory, meanwhile, is a material change in the system rather than a data record. Consciousness and suffering did not appear suddenly; they are extensions of older mechanisms for avoiding damage. This is what transformed pain into an experience, rather than just a signal.
Summary
Nature conservation cannot be merely a calculation of ecosystem services. It must become an attempt to save millions of unique ways of being in the world. Every organism is a one-time trajectory of life, not an interchangeable specimen of a specification.
If we acknowledge that we are destroying others' psychoscapes, we must ask: how much biological freedom are we sacrificing for our own convenience? The true biodiversity crisis is the systematic destruction of the inalienable 'whys' of beings who, though silent, are full-fledged agents.
Frequently Asked Questions
How does a living organism's reaction to a stimulus differ from the operation of a simple mechanism or device?
The difference lies in the existence of an internal frame of reference, through which an event is significant to the organism itself and affects its ability to persist. Unlike a mechanism, whose purpose is externally determined, a living organism values stimuli as either favorable or harmful.
Who or what can have its own interests, and on what basis can we speak of the 'well-being' of organisms lacking human rationality?
Interests can be held by organisms that possess their own organization, needs, and states, the fulfillment or destruction of which affects their lives. The well-being of such beings is based on the system's ability to maintain integrity, regenerate, and complete its characteristic life cycle, regardless of whether it possesses rationality or self-awareness.
Do the senses act as objective recorders of reality, or do they rather filter the world according to the organism's needs?
The senses are not objective recorders of reality, but a process of biological valuation. The organism filters the world, perceiving only those fragments of reality that are relevant in the context of its needs and the possibilities for action resulting from its bodily architecture.
What is horizontal intelligence, and how do simple organisms, such as bacteria or plants, exhibit agency without having a brain?
Horizontal intelligence is an organism's operational ability to effectively solve problems inherent to its own life form, without reference to an anthropocentric hierarchy. Simple organisms exhibit agency through molecular architectures and receptor systems that allow them to process information about the environment and alter their behavior to achieve biological goals without the involvement of a brain.
Are the complex reactions of plants and animals merely automatic programs, or are they a manifestation of some kind of intelligence and subjectivity?
The complex reactions of plants and animals are a biological fact resulting from evolutionarily shaped adaptive mechanisms, signaling, and physiological memory. The dispute over whether to call them intelligence and agency mainly concerns the adopted linguistic interpretation and level of description, rather than the biological processes themselves.
How does the author address the treatment of animals as elements of ecosystem services?
The author criticizes the treatment of animals as statistical units of ecosystem services.
Did complex senses appear suddenly in the course of evolution, or do they have simpler counterparts in single-celled organisms?
Complex senses did not appear suddenly, but rather constitute an extension of simpler regulatory mechanisms present in single-celled organisms. Their functional predecessors include, among others, bacterial chemical receptors, photoreactive proteins of microorganisms, and mechanosensitive membrane channels.
What is memory from a biological perspective, and why cannot it be separated from the body?
From a biological perspective, memory is not a stored image, but a material change in the entire system, manifesting through synaptic plasticity, gene expression, and the restructuring of neuronal structures. It cannot be separated from the body because information about the past is written into the physical history of the organism, and memory in the neurobiological sense does not exist outside the substrate of life.
Does the fact that bacteria or plants exhibit memory and respond to stimuli mean that they possess consciousness and experience the world as humans do?
No, the ability of bacteria and plants to respond to stimuli and possess cellular memory does not mean that they have consciousness or experience the world like humans. The functional sensitivity of organisms differs from phenomenal experience, meaning that they can, for example, trigger defense mechanisms without experiencing fear.
Did consciousness and the capacity to suffer appear suddenly, or do they result from earlier biological mechanisms?
Consciousness and the capacity to suffer did not appear suddenly, but grew out of earlier biological mechanisms, such as selective response to stimuli or the regulation of one's own activity. The first pain emerged in a history of life that already possessed the functional conditions and mechanisms for avoiding what destroyed its integrity.
Is the boundary between a single organism and a collective constant, and who exactly constitutes the subject of biological interests?
The boundary between a single organism and a collective is not constant, but appears as a constantly shifting line. The subject of biological interests can be a process of integrating multiple agencies into a new whole, and biological identity is often dispersed or negotiated between parts.
Can organisms lacking a nervous system exhibit intelligence or solve complex problems?
Yes, organisms without a nervous system can demonstrate complex adaptive competence and biologically solve problems. An example is the slime mold Physarum, which adapts to the structure of its environment by reorganizing its own body, allowing it to efficiently connect food sources.
Is a biological unit a constant entity, or can it emerge from the relations and cooperation of many smaller elements?
A biological unit is not a constant entity; rather, its individuality may be conditional and result from the relations and cooperation of many elements. A collection of units can create a structure based on the division of functions and a shared developmental trajectory, in which formerly independent entities cease to function as autonomous individuals.
Must a biological unit be uniform in origin and possess a single control center to be an agent?
No, an agent does not have to be uniform in origin nor possess a single control center. Evidence for this is mitochondria, which resulted from the integration of different evolutionary lines, and octopuses, whose unity of action results from the distributed coordination of many partially autonomous processes.
Where does a single organism end and a superorganism begin, and how does this affect the understanding of agency?
There is no single universal threshold separating an organism from a superorganism, as this boundary is a gradient of dependence, autonomy, and specialization. Agency is distributed across levels: an individual can be the subject of local action, while the whole exhibits systemic properties without a central author.
In what way do organisms influence their own evolutionary process, and do genes fully determine their development?
Organisms influence their own evolution by modifying their environment (e.g., building dams or nests), which changes the sources of selective pressure for them and their offspring. Genes do not fully determine development, as the genome is a resource utilized by the system, and causality is distributed among many levels of organization, including physiology and the environment.
Is an organism merely a product of its genes, or something more?
An organism is not solely a product of genes, but a historical arrangement operating within a network of dependencies including RNA, proteins, the environment, and developmental history. The genome acts as a kind of musical score, the final performance of which depends on many factors, while the organism itself is simultaneously a result of evolution and a regulatory center influencing its surroundings.
What is a psychoscape, and how does it change the understanding of an ecosystem compared to the traditional biological approach?
A psychoscape is a space created by the overlapping of multiple worlds (Umwelt) of different organisms, which actively transform the environment through their preferences and actions. In contrast to the traditional approach that treats an ecosystem as a mechanism for the flow of biomass and matter, this concept views it as a dynamic system of subjective choices and interventions.
What is a psychoscape, and why do individual differences between organisms matter for the functioning of entire ecosystems?
A psychoscape is a landscape understood as a space of intersecting needs, preferences, and ways of perceiving by the beings inhabiting a given place. Individual differences between organisms are significant because they realistically affect the functioning of entire ecosystems; an example of this is the impact of individual consumers' mobility on nutrient transport.
How does the ecosystem perspective differ from the psychoscape perspective in the context of animal behavior?
The ecosystem perspective focuses on systemic effects, such as flows of matter and energy and ecological functions. The psychoscape perspective adds the viewpoint of the agent to this, analyzing the causes of behaviors resulting from the organism's lived interest and its individual perception of the environment as a topography of opportunities and risks.
Do two individuals of the same species in the same place perform an identical function in the ecosystem?
No, two individuals of the same species do not perform an identical function because they differ in behavior, age, condition, and experience. For example, older animals possess unique knowledge about migrations and resources, meaning their ecological replaceability is not perfect.
Why should nature conservation go beyond caring for species and ecosystem services in favor of protecting individual organisms?
The protection of individual organisms is essential because single individuals differ in how they interact with the ecosystem and can independently influence the distribution of matter and energy. This allows for the avoidance of an anthropocentric approach based solely on ecosystem services and recognizes the value of the organism as the center of its own life, ensuring it has the space to engage in behaviors appropriate to its biology.
How does the concept of the psychoscape change the approach to nature conservation compared to traditional ecological methods?
The concept of the psychoscape shifts the emphasis from protecting resources and keystone species to protecting agentic relationships and diverse ways of life. Unlike traditional methods, it does not focus on the geometry of the terrain or the functional utility of organisms, but on the value of their existence and their available biological possibilities.
What is a psychoscape, and how does shifting the perspective from population-based to biographical affect the understanding of the ecosystem?
A psychoscape is a recursive network of overlapping worlds (Umwelten), in which organisms constantly modify one another through their actions. Shifting the perspective from population-based to biographical allows us to see that an ecosystem is not merely a statistical head count, but the result of real, individual histories and differences in behavior and ecological roles of specific individuals.
How does human activity affect the subjective experience of the world by other organisms, and what does this mean for nature conservation?
Human activity transforms the psychoscapes of other organisms, creating barriers and sensory traps that make their worlds illegible. For nature conservation, this means the necessity of caring not only about the number of individuals, but about preserving a world that enables organisms to biologically orient themselves in space and be what they are.
