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A ripple effect occurs when an initial disturbance to tướng a system propagates outward to tướng disturb an increasingly larger portion of the system, lượt thích ripples expanding across the water when an object is dropped into it.
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The ripple effect is often used colloquially to tướng mean a multiplier in macroeconomics. For example, an individual's reduction in spending reduces the incomes of others and their ability to tướng spend. In a broader global context, research has shown how monetary policy decisions, especially by major economies lượt thích the US, can create ripple effects impacting economies worldwide, emphasizing the interconnectedness of today's global economy. 
In sociology, the ripple effect can be observed in how social interactions can affect situations not directly related to tướng the initial interaction,[page needed] and in charitable activities where information can be disseminated and passed from the community to tướng broaden its impact.
The concept has been applied in computer science within the field of software metrics as a complexity measure.
The Weinstein effect and the rise of the Me Too movement
In October 2017, according to tướng The Thủ đô New York Times[circular reference] and The New Yorker, dozens of women have accused American film producer Harvey Weinstein, former founder of Miramax Films and The Weinstein Company, of rape, sexual assault and sexual abuse for over a period of three decades. Shortly after over eighty accusations, Harvey was dismissed from his own company, expelled from the Academy of Motion Picture Arts and Sciences and other professional associations, and even retired from public view. The allegations against him results in the Weinstein effect, a global trend involving a serial number of sexual misconduct allegations towards other famous men in Hollywood, such as Louis CK and Kevin Spacey. The effect lead to tướng the formation of the controversial Me Too movement, where people share their experiences of sexual harassment/assault.
- Butterfly effect — an effect where a minimal change in one state of a system results in large differences in its later state.
- Clapotis — a non-breaking standing wave with higher amplitude than thở the waves it's composed of.
- Domino effect — an effect where one sự kiện sets off a chain of non-incremental other events.
- Snowball effect — an effect where a process starting from an initial state of small significance builds upon itself in time.