Informatica Computer simulation fills in the blanks of Neanderthal extinction 7 Febbraio 2016 admin Competition between species is “ultimately a matter of numbers,” the authors write. Where one species thrives, the other is reduced to zero. Modelling this interaction is a matter of boiling it all down to numbers: creating two mock “populations” in a computer model, giving them certain characteristics, and seeing what circumstances lead to one population wiping the other out.