A function that will only "hear" an input containing variants on the string `"no evil"`.
`Hear` is not case sensitive and will remove punctuation so `"no_Evil"` and `"nO- _eVil"` will also be heard.
`Hear` is also sensitive to value names so passing an object `no_evil <- "asdf"` containing any arbitrary strings will also be heard.
Anything that is not specifically `"no evil"` or some acceptable variant is assumed to be evil and will not be heard.