Parity Errors: Pl.n. Little Lapses Of Attention Or (in More Severe
Cases) Consciousness, Usually Brought On By Having Spent All Night
And Most Of The Next Day Hacking.
:parity errors: pl.n. Little lapses of attention or (in more severe
cases) consciousness, usually brought on by having spent all night
and most of the next day hacking. "I need to go home and crash;
I'm starting to get a lot of parity errors." Derives from a
relatively common but nearly always correctable transient error in
RAM hardware. Parity errors can also afflict mass storage and
serial communication lines; this is more serious because not always
correctable.
-- The AI Hackers Dictionary