I think it's more that we cab tease out a lot of information from very little data by just making some assumptions (physics). This is also why it's so difficult

I think it's more that we cab tease out a lot of information from very little data by just making some assumptions (physics). This is also why it's so difficult (impossible?) to anonymize personal data - very little of it can lead to understanding who you are. It is remarkable what astronomers/physicists have achieved though.