Finally, I want to ask the Minister this question, which is: if he is so confident that an optional scheme leaves genuine choice for service providers, then who does he think are the services that are most likely to be able to afford to opt in to a scheme that may well underfund these employment conditions? He's been with the services at the weekend. He knows what they're all saying. They're all saying, "Well, you're going to tie our hands behind our backs and say that 'The only way that you can get more funding to pay your teachers is if you opt into my scheme.' " The Minister is saying that you have to opt in to this scheme in order to get the additional funding, but the additional funding may not actually cover the cost of that. 