What is the basis for economics

One basis for economics are science of choice.

The business cycle is the periodic but irregular up-and-down movement in economic activity, measured by fluctuations in real gross domestic product (gdp) and other macroeconomic variables. a business cycle is typically characterized by four phases—recession, recovery, growth, and decline—that repeat themselves over time. economists note, however, that complete business cycles vary in length. the duration of business cycles can be anywhere from about two to twelve years, with most cycles averaging six years in length. some business analysts use the business cycle model and terminology to study and explain fluctuations in business inventory and other individual elements of corporate operations. but the term "business cycle" is still primarily associated with larger (industry-wide, regional, national, or even international) business trends.

Cancer  is the  uncontrolled growth and division of cells  that is often prevented by  cell-cycle checkpoints that monitor for dna damage or spindle fiber failure and stop the ..  cancer  is theuncontrolled growth and division of cells that is caused  by un-repaired..