Most people get a clearer picture of themselves as they grow older but many egocentrics can't and the oblivious don't even look. Ips can be very insightful of others but seem to have great difficulty with self-evaluation because they tend to be overly guarded, and suspicious of what others may say. Ips seem to metaphorically build castles of assumptions, behind which they defend themselves. When one never leaves a castle and only peers out, it hard to get a true picture of it as seen from the outside; one eventually has to accept what others say as plausible.....
a.k.a. I/O