<ul data-eligibleForWebStory="true">The Heisenberg uncertainty principle holds things together, quantitatively balancing position and momentum in the physical world.The Trump uncertainty principle introduced by the current administration is causing chaos in US science.Scientific culture in the US is suffering due to uncertainties around funding, grant cancellations, and policy changes.The Trump administration's actions have led to the cancellation of grants and disruptions in key US science funding agencies.Harvard University and other institutions face challenges like visa cancellations for international students and regulatory scrutiny.The impact of the Trump uncertainty principle extends beyond institutions, affecting collaborative efforts, hiring, and research funding.Scientific research, collaboration, and future planning are all hindered by the unpredictability of the Trump uncertainty principle.The administration's approach undermines long-standing scientific institutions and disrupts scientific practices and norms.The uncertainty injected into the scientific culture by the Trump administration threatens the pursuit of bomb-proof knowledge.The justifications for the Trump uncertainty principle lack credibility, further harming scientific culture and progress.