Counterfactuals Causal inference is easier when the effects are large and sudden. The COVID-19 pandemic and accompanying policy measures caused economic disruption so stark that sophisticated statistical approaches were unnecessary for many questions. For example, unemployment jumped sharply in the early weeks of the pandemic, leaving little room for alternative explanations.
"Our strong preference is to continue to serve the Department and our warfighters — with our two requested safeguards in place," Amodei said. "We remain ready to continue our work to support the national security of the United States."
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