Well, as others have noted, apparently they do have some affordance for that. But in general, the argument "why don't they collect data X to see if it's relevan

Well, as others have noted, apparently they do have some affordance for that. But in general, the argument "why don't they collect data X to see if it's relevant to their goals" could be applied to literally any possible data X. Of course intuition must be used to focus data collection efforts.