frog...Let's suppose an envelope containing Anthrax was sent to someone in the government (I know, that would probably NEVER happen), would it be helpful if we could lift the oils out of the envelope and determine the probable biogeographical ancestry of someone that had handled the letter?
How about a canister of gas left in a subway?
How about a vial containing an unknown virus?
How about paperwork, glass, cigarette butt found at a location during an investigation in the aftermath of an attack. Even if you knew the last known resident, would it be helpful to seek additional samples from the site to know who else may have been there, and what their ancestry might be?
So many questions, so few answers...
Later,
W2P