In various contexts, for practical, philosophical, and logical reasons, there is a default assumption. In the criminal justice system, for example, someone is presumed innocent until proven guilty.

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 ...

Christina Majaski writes and edits finance, credit cards, and travel content. She has 14+ years of experience with print and digital publications. Khadija Khartit is a strategy, investment, and ...

Efficient market hypothesis posits stock prices reflect all known info, making market timing tough. Critics argue market sentiment and future predictions also shape stock valuations, not just known ...

Random walk hypothesis suggests stock market movements are unpredictable, impacting active trading. This theory supports long-term investment strategies, like buy-and-hold, over short-term speculation ...

The big picture: Having the last name "Null" is apparently the modern equivalent of being cursed. Just ask the Nulls who endure a never-ending loop of website errors, processing failures, and customer ...

Spoiler: there isn’t just one network definition. Learn everything you need to assess various network types, topologies, and architectures. The simple network definition: a system that links other ...

COVID-19 vaccination has been the subject of immense scrutiny and misinformation since the vaccines were first administered in the U.S. nearly four years ago. In the first year alone, it is estimated ...

Mr. Piller is an investigative journalist for Science magazine and the author of a forthcoming book on fraud in Alzheimer’s research. What if a preposterous failed treatment for Covid-19 — the ...