She argues that overt images of death and decay along with the deeper implications of societal decline and collapse are powerful triggers for denial of mortality. (newscientist.com)
«You have to give that option; I think also it could be a very powerful trigger as well — if «none of the above» got significant proportion of votes then again it would act as a really clear wake up call to politicians that they need to work harder to gain the support of the people, and they need to work out what it is that they are doing wrong. (totalpolitics.com)
Smell is the most powerful trigger to the memory there is. (angelahighland.com)