From: Fela Winkelmolen on
> Might give some strange behaviour though:
>
> "1$".to_f => 1.0
> "nonsense".to_f => 0.0
> "nanotubes".to_f => Nan ?
> "inferiority".to_f => Inf ?

well, it's not so much "stranger" than the following I suppose

"24/7".to_f => 24.0