When Congressional investigators come calling, or hostile lawyers begin trawling in electronic discovery, guilty and not-so-guilty alike can be caught in the net:
It’s the folks who are just chattering and venting to colleagues about normal business tensions who are most at risk. The computer doesn’t capture the wink or head nod. It doesn’t say “this is my first reaction…when I have considered everything in detail, I’ll give you my final opinion.” Etc.
(h/t Pete Warden, from whom more).