Totally nitpicking for fun here, but literally every significant thing a person does each and every day is determinable through the analysis of data that gets generated by said act. has always been true, just never possible.
Criminals always left DNA at crimescenes, even before people knew it existed.
In the past if someone dodged work to go to a protest there would be witnesses all along the way - phonecall to work, boss recording them as ill, train passengers seeing them, DNA left on the train, dogs smelling their scent, mud from their home area dropped on the street, coffee shop worker in the city serving them, other protesters seeing them, all sorts of historic record that this happened, and nothing else happened, just no way for humans to pull that together.
History only happened one way. The uncertainty about what happened somewhere/somewhen has always been in our understanding, not in the world itself.
Criminals always left DNA at crimescenes, even before people knew it existed.
In the past if someone dodged work to go to a protest there would be witnesses all along the way - phonecall to work, boss recording them as ill, train passengers seeing them, DNA left on the train, dogs smelling their scent, mud from their home area dropped on the street, coffee shop worker in the city serving them, other protesters seeing them, all sorts of historic record that this happened, and nothing else happened, just no way for humans to pull that together.
History only happened one way. The uncertainty about what happened somewhere/somewhen has always been in our understanding, not in the world itself.