David McF:
>
> What is the actual maximum number of goals A and B could
> achieve in reality? Maybe person C believes she can achieve 70
> and actually does achieve 70.
That makes sense to me, yet knowing what a person can and cannot achieve
depends on a LOT of information. I believe that a process of trial and
error will give feedback to the achiever of what is possible. It seems
best, when not having such experience, to give oneself a very high upper
boundary of possibility, since a too low boundary may be mistaken for a the
actual maximum that person in those circumstances may achieve.