[Haskell-cafe] read "2" in a "void" context?

Hi fellow Haskellers! If I bring up ghci and evaluate `read 2` I get the error "Prelude.read: no parse" GHCi, version 7.10.2: http://www.haskell.org/ghc/ :? for help Prelude> read "2" *** Exception: Prelude.read: no parse Exactly how is this message coming about? I understand that `read` needs a return type in order to determine which type class instance to run. So, in this case, which type is `read` being asked to return? Thanks, Erik