Will Evolutionary Processes Replace Human Designers?
The aim of advancing evolutionary algorithms is not to replace human designers, but rather to support them in delving into and articulately navigating both the problem and solution domains of design. These algorithms offer a way to broaden the scope of design exploration, potentially reducing the designer's tendency to fixate on a limited array of solutions by presenting diverse alternatives.
What are Interactive Genetic Algorithms (IGAs)
As discussed earlier, evolutionary algorithms draw analogies from natural evolutionary processes, effectively solving diverse problems. Since the 1980s, GAs have been used in optimisation and classification tasks, proving adept at finding optimised solutions using definite fitness values. However, GAs struggle to incorporate subjective goals crucial in creative fields such as art, design, music, and architecture. In these areas, assigning a fitness value is difficult as evaluations are heavily reliant on human subjective judgement. Furthermore, in creative fields, integrating the designer's input into the evolutionary process is essential for guiding the design based on subjective judgement.
Natural Selection vs Artificial Selection
Artificial selection involves deliberate human intervention to influence the evolutionary trajectory of a population, aiming to produce specific desired traits or outcomes. It resembles the selective breeding carried out by humans to produce a desired evolutionary response, such as the process commonly employed in breeding various domesticated animals such as racehorses, greyhounds, pigeons, and cattle.
Biological Systems vs Human-Made Design.
Nature's evolutionary processes have developed biological systems that surpass any human creation in terms of complexity, functionality, and efficiency. Natural ecosystems feature complex biological networks that excel in recycling materials, adapting to changes, and optimising the use of ambient energy. Conversely, man-made environments exhibit multi-layered, simplistic structures with deficiencies in material recycling, adaptability, and energy utilisation. Adopting an ecological architectural perspective does not mean replicating natural ecosystems exactly, but its principles of engaging with the environment are highly pertinent.
Does Nature Optimise?
Another prevalent misrepresentation encountered in some research papers is the argument around the characterisation of evolution as a problem-solving, optimising mechanism. It's essential to clarify that nature does not primarily optimise; instead, it operates based on redundancy and survival.
The Biological Analogy
The discussion regarding evolutionary algorithms frequently revolves around their supposed replication of natural processes. However, this assertion often reflects a fundamental misconception about these algorithms. In the context of architecture, evolutionary algorithms serve as mathematical models that simulate specific aspects of biological processes.
What are Evolutionary Algorithms?
Developed by evolutionary scientists in the 1950s and 1960s, evolutionary algorithms draw inspiration from the adaptive processes found in natural evolution. These algorithms incorporate principles like natural selection, mutation, and recombination to tackle computational challenges that require the identification of varied and optimum solutions.
My Connection with Parametric Design
My fascination with parametric and generative design tools such as Grasshopper arises from my deep-seated curiosity about the intricacies of natural self-organising systems, whether they are materials or biological systems. This curiosity extends to diverse natural phenomena like the formation of sand dunes, the ebb and flow of sea waves, the delicate patterns of cloud formation, the captivating shapes of soap bubbles, or the arrangement of leaves around a stem.
My Architectural Narrative
Ever since I studied architecture, I experienced a tension between two divergent drives that were pulling me in two opposite directions. The first drive was my attempt to connect with the traditional form of architectural education that was based on Vitruvius principles of firmitas (form), utility's (function), and venustas (beauty), while the second drive was my inherited love of science, mathematics and natural systems.