# #Mon Aug 09 11:56:25 CEST 2010 Slide__KnzsoKOcEd-WfYQ0GneCwQ_subTitle= Slide__KnzsoKOcEd-WfYQ0GneCwQ_footer=Prof. Dr. Yehuda Elkana Central European University Budapest 2005 Slide__KnzsoKOcEd-WfYQ0GneCwQ_title=Which is the greatest challenge?