Sounds to me like they just analyzed a bunch of data and found that there were some people, in that historical data set, who consistently bought products that fail.
For this to be science, instead of just finding random correlations, they'd have to take those people and see if they _continue_ to buy products that fail.
Otherwise, sure, I have no doubt in any big enough data set, there will be some people that happen to have done whatever you want to find. Doesn't mean there's any predictive power in it.
For this to be science, instead of just finding random correlations, they'd have to take those people and see if they _continue_ to buy products that fail.
Otherwise, sure, I have no doubt in any big enough data set, there will be some people that happen to have done whatever you want to find. Doesn't mean there's any predictive power in it.