Agrand jury was investigating a bank robbery. the only information known to the prosecutor was a rumor that a certain ex-convict might have been involved. the grand jury subpoenaed the ex-convict. he refused to answer questions about the robbery and was granted use and derivative use immunity. he then testified that he and a friend had robbed the bank. the grand jury indicted both the ex-convict and his friend for the bank robbery. the prosecutor permitted the friend to enter a plea to a lesser offense in exchange for the friend’s agreement to testify against the ex-convict. the prosecutor had no evidence as to the identity of the robbers except the testimony of the friend and the ex-convict. at the ex-convict’s trial, should his objection to his friend’s being permitted to testify be sustained?

Destablishing a distribution network

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.