Absolutely no logic or common sense needed during the interview. The interviewer only wants to find out if you have a loud voice. Be prepare to say ANYTHING as loud and fast as you can. The PBL is only for research minded, talkative people. Don't even bother to apply if you aren't able to talk non-stop for 90 minutes.
The whole PBL program (no lectures, no text books, lots of unhappy students). Observing the 1st year students' PBL session was extremely boring. Very hostile staffs and admissions officers. Outrageous tuition at $75000 ~ $80000 a year