I think UNIX is the most intelligent OS ever designed.
It has its own way of responding to your questions.
Here is a (actual) Question/Answer session in a UNIX machine.
(I swear that these are real responses given by the UNIX
machine I am using at my company)

[dps013:dps-dps]
[dps013:dps-dps] man: why did you have a divorce?
man:: Too many arguments.
[dps013:dps-dps]
[dps013:dps-dps] [Where is jummy hoffa?
Missing ].
[dps013:dps-dps] got a light?
No match.
[dps013:dps-dps] ^how did your sex change^operation go?
Modifier failed.
[dps013:dps-dps]