Beyond the cognitive factors that regulate word cycles, a number of cultural and biological forces are involved in language change at different levels, such as individual learning [7,24,25], changes in vocal anatomy [26] and adaptations that decrease the effort of language production and understanding [27,28], among others.
This can be seen as a timescale related to ‘social interest’, much in the same way that Michel and collaborators [1] analyzed the decreasing levels of interest in events of the past and showed that, in recent years, interest decline to half of the initial level after only 10 years. Beyond the cognitive factors that regulate word cycles, a number of cultural and biological forces are involved in language change at different levels, such as individual learning [7,24,25], changes in vocal anatomy [26] and adaptations that decrease the effort of language production and understanding [27,28], among others. Decreased effort refers to the optimization of the trade-off between accurate and efficient communication, which has been put forward as a possible explanation of Zipf's law [29].