Abstract
I will briefly review the history and evolution of the concept of runaway stars, from the discovery of this class of objects in Orion by Blaauw and Morgan up to the recent discovery of three very young runaway stars: BN-I-n in the Becklin-Neugebauer/Kleinman-Low region again in Orion. I will show numerical simulations based in the model of strong dynamical interactions among protostars that reproduce the observed kinematical configuration on the BN-I-n systems.
