HHGTTG “Someone Else’s Problem” Field.
Popularized by Douglas Adams in the “Hitchhikers Guide to the Galaxy” series, in which Ford Prefect describes it as:
“An SEP is something we can’t see, or don’t see, or our brain doesn’t let us see, because we think that it’s somebody else’s problem… The brain just edits it out, it’s like a blind spot. If you look at it directly you won’t see it unless you know precisely what it is. Your only hope is to catch it by surprise out of the corner of your eye.”
In that series, a strange object can be effectively hidden from view while out in plain sight, by an “SEP field”, which "relies on people’s natural predisposition not to see anything they don’t want to, weren’t expecting, or can’t explain.
.sjb