How long do we live? Demographic models and reflections on tempo effects: An introduction.- How long do we live? Demographic models and reflections on tempo effects: An introduction.- Theoretical basis for the mortality tempo effect.- Estimating mean lifetime.- The quantum and tempo of life-cycle events.- Critiques, extensions and applications of the mortality tempo effect.- Demographic translation and tempo effects: An accelerated failure time perspective.- Lifesaving, lifetimes and lifetables.- Tempo and its tribulations.- Tempo effects in mortality: An appraisal.- Increments to life and mortality tempo.- Mortality tempo versus removal of causes of mortality: Opposite views leading to different estimations of life expectancy.- Tempo effect on age-specific death rates.- Mortality tempo-adjustment: Theoretical considerations and an empirical application.- Comparison of period and cohort measures of longevity.- Five period measures of longevity.- Found in translation? A cohort perspective on tempo-adjusted life expectancy.- Conclusions.- Afterthoughts on the mortality tempo effect.- Turbulence in lifetables: Demonstration by four simple examples.