This paper deals with a philosophical question that arises within the theory of computational complexity: how to understand the notion of INTRINSIC complexity or difficulty, as opposed to notions of ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Float time refers to the amount of time between when an individual writes and submits a ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Twenty years after the introduction of the theory, we revisit what it does—and doesn’t—explain. by Clayton M. Christensen, Michael E. Raynor and Rory McDonald Please enjoy this HBR Classic. Clayton M.

Sep. 25, 2025 — New studies show that a bacterial molecule, peptidoglycan, is present in the brain and fluctuates with sleep patterns. This challenges the idea that sleep is solely brain-driven, ...

Tyler Robinson has been charged with the aggravated murder of conservative commentator Charlie Kirk, prosecutors announced on Tuesday, as they revealed text messages he allegedly sent in the hours ...