Today, I shall share my view with you on the question posted by Andy :)
=> is there a simplified procedure that will enable us to quickly drill down to the important aspects of an individual's personality?
Human being is a complex creature that, up to now, pyschologists still trying their very best to 'understand' human nature.
Of course, there are simplified ways of ascertaining a person's characters. But, that could only 'outline' his/her brief and surface character.
Personally, it is my preference to do a more comprehensive analysis than a simple one.
=> For example, if we are scanning candidates for a casual vacancy, we might not be interested in their marital prospects or family relationships, just want to quickly know if their personality can fit.
If it is only a casual vacancy (i.e. short term employer-employee relationship), I wouldn't want to go into analysing his/her bazi. Face reading and observing body languagues would be good encough.
However, if it is a permanant & important position, comprehensive analysis (including marital prospects or family relationships) is required.
By saying so, judging whether a person is suitable for certain position by merely based on the study of his/her birth data (i.e. bazi) is not acceptable in most of the countries.
Be careful if you choose to do so. Do & evaluate it quietly!
==> For this purpose, would looking at the day stem be enough? Or do we always need to look at 10D too?
Whether it is a simple or a comprehensive analysis, I would consider both the Day Stem and the 10 Deities.
==> In your opinion, what is the minimum factors in a bazi we must look at in order to reach an accuracy (personality wise) of, say, 70%?
The energy of 5 elements & 10 deities within the natal chart. To further enhance the accuracy, you may want to include Compound Stars & 12 Life Stages as well.
Basically, you have to include all :)
==> Do you think this simplified method of reading is sufficient to hit an acceptable level of accuracy if we only want to know about personality?
Your analysis of the cited case is on the right track. BTW, I do not have any idea on the identity of individual (male or female ??)