In the architecture of the developing brain, neurons undertake a perilous migration, their nuclei bending and breaking under physical strain — and science has now confirmed that this DNA damage is not an accident but a routine feature of life's earliest construction. A study published in Nature reveals that neurons have evolved precise molecular tools to repair these breaks in genomic regions where the damage can do the least harm. The finding reframes DNA injury not as a failure of biology, but as a managed risk written into the choreography of development itself. What remains to be understoo