Hi Fabien and welcome, you just discovered this phenomenon: http://en.wikipedia.org/wiki/Birthday_problem
and you can be proud having discovered it by yourself! Alain On Sun, Jun 15, 2014 at 12:12 AM, Hilaire Fernandes < hilaire.fernan...@gmail.com> wrote: > Hi Fabien, > > As other already explained, you just discovered the marvelous Set > collection. > > Hilaire > > Le 14/06/2014 11:48, Fabian Boucsein a écrit : > > i am new to Smalltalk and Pharo and today, while > > trying out some examples, i observed an somewhat > > strange behaviour. > > -- > Dr. Geo http://drgeo.eu > iStoa - https://launchpad.net/istoa > > >
