Ah yes, the most irrefutable of sources 😜

Personal knowledge can provide a level of detail in mapping simply unavailable elsewhere.

source: "trust me bro"

I mean, the iD editor has "Local Knowledge" as one of predefined options for changeset sources. This is just that, except... less local. :)

Can't spell "Lamborghini" without "L"

Can't spell "Knowledge" without "W"

Checkmate Atheists.

It was revealed to him in a dream