yea, i think the believers are influence by their family/relatives, the older generation. the cannot eat star fruit superstious person is around 40+, but she's not a "guanyin worshipper", also just hearsay. hearsay this hearsay that, one to ten, ten to hundred, hundred to thousand.... but she is a non believer. she would even eat human meat, just to see how it taste like. some more a she. omg...
talking about cow, can read back thye story posted before very recently.
http://sgforums.com/forums/1728/topics/442711
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there are a lot of superstitions going on, all thank to the ancient past practises and grandmother tales from your grandparents and parents. the best way is to educate them, hence education is very important to society.