Abstract
The curiosity-driven discovery of giant DNA viruses infecting amoebas has triggered an intense debate about the origin, nature, and definition of viruses. This discovery was delayed by the current paradigm confusing viruses with small virions. Several new definitions and concepts have been proposed either to reconcile the unique features of giant viruses with previous paradigms or to propose a completely new vision of the living world. I briefly review here how several other lines of research in virology converged during the last 2 decades with the discovery of giant viruses to change our traditional perception of the viral world. This story emphasizes the power of multidisciplinary curiosity-driven research, from the hospital to the field and the laboratory. Notably, some philosophers have now also joined biologists in their quest to make sense of the abundance and diversity of viruses and related capsidless mobile elements in the biosphere.
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