Dr. Alejandro Klein is a Research Professor at the Department of Governance & Development, Social Sciences and Humanities Faculty at the University of Guanajuato, Mexico, and Associate Professorial Fellow at The Oxford Institute of Population Ageing, UK. A trained psychologist, Dr Klein researches the socio-demographic issues facing the ageing populations of Latin America. He has a wealth of teaching experience at the undergraduate and graduate levels including supervision of masters and doctoral degrees.

Chapter 1. Note about the methodological and conceptual use of this book.- Chapter 2. Old age no longer anticipates the unpostponable sign of death. The new social and identity models of older adults.- Chapter 3.The new dialogues of grandparenthood from the social precariousness and the familiar bewilderment.- Chapter 4. The older adult, the social bond in transition and the exhaustion of the transmission capacity.- Chapter 5. Change to the "social order" from the deconstruction imposed by the aging society: social relations that become anachronistic, social relations that are idealized, social relations that are denigrated.- Chapter 6. Ageism, disability and healthy ageing as stereotypizing paradigms.- Chapter 7. Old people, coronavirus and the precarious culture of the precarious.- Chapter 8. Tanatopolitics, totalitarianism and coronavirus: a tour of excesses.- Chapter 9. Insolvable dilemmas of a bewildered world.- Chapter 10. Preliminary hypotheses for a probability called mutational society.- Chapter 11. Unstable reasons for a possible post-mutationary society.