Point taken about evidence of predictive value v. random chance. Just to clarify, the intellectual exercise was more in the lines of, rather than taking an astrology book and seeing if what it says is predictive v. chance, let's rephrase the question: The question not as "is Astrology real or correct", it becomes "could time of birth affect development, apart from seasonal effects?". (why day or hour of birth, from year to year, might matter). Then the exercise leads to "could planetary alignment (gravitational changes, electrical fields, etc.) have subtle and predictive effects on personality or development?" And that is where I hit "who am I to say" seeing as that's not my area of knowledge, and I have not come across any studies that might have analyzed that either way. Maybe it's because some proto-analysis suggests that it's not "worth" studying because there's nothing to study (fields from high-tension power lines affecting development, possibly), but maybe the "worth" is more monetary: who's going to bother funding it? a. it seems ridiculous, b. it would be really really hard = expensive, c. the effect might be there but too subtle for us to measure at this time. Anyway, I'm in no way a proponent of astrology, just relaying a process that seemed a rational exploration at the time.