Servers may choose to outline rules on the behaviour of internet bots by implementing a robots.txt file: this file is simply text stating the rules governing a bot's behaviour on that server. Any bot interacting with (or 'spidering') any server that does not follow these rules should, in theory, be denied access to, or removed from, the affected website.
For other uses, see Ignorance (disambiguation). Ignorance is a state of being uninformed or lack of knowledge. The word ignorant is an adjective describing a person in the state of being unaware and is often (incorrectly) used to describe individuals who deliberately ignore or disregard important information or facts.
Confusing ignorance with impossibility (or possibility) is fallacious. Exception: The assumption of a conclusion or fact deduced from evidence of absence, is not considered a fallacy, but valid reasoning.