Interesting to uncover data that's not directly related to a requirement: get some search results. Of course it's humans sitting at the laptop, so time matters.

Interesting to uncover data that's not directly related to a requirement: get some search results. Of course it's humans sitting at the laptop, so time matters. But the other data you mention also has the nature of "the thing we care about" along with "time associated with the thing we care about." I wonder what other extra-dimensional (totally made up term on the fly) data we might care about. Power per query. Temperature per query. Water consumed per query. Water consumed per current activity level of trending topics.