Euan Haley B. Cortez May 5, 2026 • 5 min read
Art by: Francheska Martina S. Cruz
They say the first sound a child hears is its mother’s heartbeat—a soft promise that the world will meet them gently. But somewhere in this world, a different lullaby is forming: the hum of machines, the quiet precision of laboratories, and the steady pulse of human ambition rewriting life’s oldest script. They are called designer babies—children whose genes are carefully edited for selected traits. In that space, creation no longer feels like chance but calculation, where microscopes and algorithms seem to decide which futures are allowed to exist. And I wonder: can a child shaped by precision ever understand the wild tenderness of being born by chance, of being loved not for perfection, but for the miracle of imperfection itself?
To understand how we arrived here is to trace a long and uneasy history. The conversation began long before the term “designer baby” unsettled modern ethics. In 1865, Francis Galton introduced eugenics, the idea that human populations could be “improved” by controlling heredity and selecting desired traits. Long before that, however, ancient civilizations such as the Greeks, Egyptians, and Incas already practiced forms of selective survival, sometimes abandoning infants with visible deformities. These early acts, though rooted in different eras, reveal a recurring human impulse: the desire to curate life itself.
The discovery of DNA in 1953—the elegant double helix carrying the code of existence—transformed that impulse into possibility. Humanity was no longer guessing at life’s instructions; it was reading them. From there came in vitro fertilization (IVF), a medical procedure where eggs and sperm are combined in a laboratory to form embryos before being transferred to the uterus. What once belonged only to nature became something science could gently assist. Later, mitochondrial replacement therapy added another layer: a child conceived with nuclear DNA from a mother and father, and mitochondrial DNA from a donor, designed to prevent inherited mitochondrial diseases.
Then came CRISPR-Cas9, a breakthrough that shifted genetic science from observation to intervention. Originally a bacterial defense system, CRISPR works like a molecular memory. When bacteria survive viral attacks, they store fragments of viral DNA in a CRISPR archive. If the virus returns, RNA guides direct the Cas9 protein to locate and cut matching viral DNA, disabling the threat. Scientists adapted this mechanism into a powerful gene-editing tool capable of precisely modifying DNA sequences in living organisms.
From this mechanism, the idea of designer babies becomes technically possible. In simplified terms, scientists can reprogram skin cells into stem-like cells, guide them into forming sperm and egg cells, and combine them through IVF to create embryos. Before implantation, CRISPR-Cas9 may be used to correct genetic diseases or, controversially, enhance selected traits. What was once nature’s slow process of inheritance can now be edited in its earliest draft.
In 2018, the world reacted with shock when Chinese scientist He Jiankui announced that he had used CRISPR to edit embryos that resulted in twin girls resistant to HIV. The scientific community responded with condemnation and alarm. It was a moment that blurred the boundary between curing disease and redesigning life. Humanity had not only learned to read its genetic code—we had begun to author it.
Yet, the promise of this technology is undeniable. CRISPR has shown potential in treating sickle cell anemia, certain cancers, and other genetic disorders once considered irreversible. For families facing inherited diseases, this is not abstract science but hope made tangible. To reject its existence entirely would be to deny relief to those whose lives are shaped by suffering written in their DNA. Compassion, after all, must evolve with understanding.
But power always demands restraint. If we can remove disease, will we eventually begin to remove difference? If health becomes customizable, will intelligence, appearance, and personality follow? The line between healing and enhancement is thin, and once crossed, difficult to redraw. What begins as medicine risks becoming a marketplace of human traits, where inequality is no longer only social or economic—but biological.
I often think about the children who may be born into such a future. What does it mean to grow up without inherited fragility, without the experience of limitation, struggle, or recovery? Empathy is often born from imperfection—from shared vulnerability, from understanding loss and uncertainty. If suffering is edited out, will compassion also fade quietly with it? A perfectly designed life may be free of pain, but it may also be free of the very experiences that make us deeply human.
Still, I do not believe progress can or should be stopped. Human history is defined by the refusal to remain within limits. Instead, the challenge lies in governance: ensuring that technologies like CRISPR are guided not only by possibility but by responsibility. Governments, scientists, and society must move together, not to ban what is inevitable, but to shape how it is used—toward healing, not hierarchy; toward care, not perfection.
In the end, I do not fear the science itself. I fear a world that confuses perfection with salvation. Perhaps the future will not be about choosing between nature and design, but about ensuring that even in design, humanity is not lost. Because to be made is to be constructed. But to be born—imperfect, uncertain, and unplanned—is to be part of something no laboratory can fully replicate: the fragile, unpredictable, and profoundly human act of becoming alive.