Just because something is documented... that doesnt necessarily mean its true ...

... but it is true that it was documented 

The current view of the "truth" changes ...

... so know how to use past versions (such as Wikipedia versioning)

Searching your own local archive is free is bias ... and helps you connect dots to other things you already reseearched 

Things in the internet archive can be deleted - Do not rely on it 

who documented somehting and when ... can sometimes be MORE revealing than what is documented

(metadata analysis)

The best way to distort reality is to only tell truthful things with selective omissions ...

(Wikipedia lies by omission)