for a long time i couldn’t figure out why Quark, Guinan, and Vic Fontaine had medical skills. and then it hit me: for the same reason as Deanna Troi. counseling. Vic helped Nog through PTSD. Quark and Guinan are bartenders; they listen to people’s problems and dispense wisdom (and intoxicants) all day long. they’re not medics, they’re therapists.