They are all mere beginners. Soon, they will become experts too. Please remember that man learns through mistakes and experiments. Also, an expert was a kid sometime. They are experimenting with the PNRs, analyzing them as per their knowledge and climbing the steps of expertise. Now you call more than 50 corr predictions and 70% accuracy person as a reliable predictor. Was there not a time when the same person had just 1 corr prediction? People grow with time, and you'll have to wait for that.