I spent many years working on 'research projects' like this, aiming to 'prove' how astrology works.
And it is a really long complicated explanation, too long for me to construct here and now. But I came to the difficult conclusion, for many reasons that I saw play out, that Astrology is not 'provable' in this simple of a way.
Charts are incredibly complex. People are incredibly complex. Their lives and circumstances are incredibly complex. So it is not that easy to just isolate something like their 'career' and make a 100% accurate prediction because of all of those complex variables.
And after 40 years of studying astrology and being as Astrological counselor I have realized that the purpose of astrology is not to try and 'predict' from a chart what a person does for a living.
The purpose is to help the native explore and assess their life and the meaning of their life and to help them navigate their transit/progressions and synastry.
I have no problem taking a crack at this guessing game. It won't bother me at all if I choose the wrong careers. Because in the end, it is not important. I don't need to prove anything to the scientists. I don't need to be able to match the correct charts because it is not anything that is a necessary skill for a working astrologer.
It might be a fun and interesting exercise. But it won't prove anything in the long run, either way.
I remember back in the 80's, when I went to a lot of Astrology Conventions. And there were HUGE well funded, well organized research projects, with the aim of 'proving' that Astrology was valid.
And the very best professional astrologers spent months doing a very detailed, blind study of various charts. And it failed big time. No one agreed and very few were totally correct and it back fired. And then I went to several panel discussions about WHY it failed.
And it was fascinating. Because in reality, MUCH of what each astrologer wrote about and discovered, had validity when the individuals read each report.
But it was for reasons that were not covered in the 'correct question/answer' log.
People are incredibly complex and cannot be reduced to simple isolated 'answers' that easily.