1) The philosophical standpoint that ignorance is bliss, and therefore learning of any kind whatsoever should be avoided at all costs.

2) Method(s) used by religions and cults to promote comfortable, simple lies over the scientific truths of the universe.

3) A standpoint backed up only by personal notions, and no real evidence or logic

To not reply by message for over 24hours

this is the command to ignore someone on an IRC server and some games such as world of warcraft.

the proper usage is /ignore time username

it is sometimes used IRL

1. feigning ignorance at another's presence, deeds or comments.
2. to willfully avoid a meeting, confrontation or thought.

Together with prejudice, the currency of the modern world

Means that you have a lack of knowledge, information or awareness about something in particular....

It Does not mean that someone is ignoring you! O.O

Lack of knowledge