Any ideas from Beta people? How would you tell if ISTp is among you trying to look like ISTj? Any ideas related to behavior, VI or anything that an outside observer can notice. Like if you are alone with them how would they be different? What if there are a lot of people present, how would they differ then? How their clothes and hair and things like that might differ? How their friends might differ? How their occupation and work style might differ? How their leisure time interests might differ? How their manners and facial expressions might differ? How their face and body structure might differ?