The year 2020 has turned Biostatistics, whose image is significantly controversial among Health professionals, into an unexpected protagonist. Even the non-specialized media has given unusual emphasis to “graphs”, “tables” and “incidences”. We evolved into discussions around “Rt”, “mortality and lethality rates”, “moving averages” and “increase and decrease rates”. Now we have become quite familiar with “phase-3 tests” and “effectiveness rates”. Managers started discussing about using “models”, “projections” and “estimates” as subsidy for planning and actions associated with public policies. () […]