Hello99: Every Chareidi Jew defines for him/herself an own definition of separation. Some sit in Bais Medrash all day and don’t speak at all to Goyim. Others join the workforce and create for themselves a separation in their workplace. Still others [like Yekkes] may even attend college, and create for themselves a separation in the college campus. My point is that a general separation barrier must be created in order to preserve our feelings for Yiddishkeit, regardless to what extent the actual barrier is; and one cannot rely on the individual ‘harchokos’ which Chaz”al instituted in specific cases, since those harchokos are not at all related to a Yid’s general obligation of creating for himself a physical/emotional barrier from secular world.
