Assume you have the conversation of billions. Its pretty easy to design "Virtual experiments", that just play out or have played out as life plays out.

Select from Everyone

//Filter the Environment with constraint to avoid polution

where(Person.isAlcoholic and Person.Age.inRange(12,49))

//Define experimental condition

experimentOutcome(State.Change(Person.isAlcoholic) upon Person.Graph.Depth(1).Death)

Gets you all acoholics quitting after death of a nearby relative.

That way, you get almost pure data and archieve what neuro sciences and psychology could never dream off. To really know people better then they even ever knew themselves.

So sad, as this is "steering" technology, we will never get to see it. We do not even get to contemplate its existence.