Devil's advocate, how long have we been measuring cancer, cell phones for any conclusion? an instant? how young are the methods and data. How pervasive are thin

Devil's advocate, how long have we been measuring cancer, cell phones for any conclusion? an instant? how young are the methods and data. How pervasive are things that we might measure wifi person vs non-wifi person objectively enough? Considering nothing counts for the wifi moment and all experiments and experiences flawed, how much data are you comfortable passing through your loved ones monthly? ;)