Here is the exchange between Leanne Wood and Carwyn Jones from yesterday's questions to the First Minister:
When we announced the plan for a tax or levy on sugary drinks as a means to both reduce the consumption of sugary drinks and employ a thousand additional doctors in Wales, the first thing I did was was check to see whether the figures added up. It didn't take more than a couple of hours for me to see that they did, and I wrote this post about it.
The main point I made was that any policy announcements we make need to be backed up with enough detail to show that our proposals are practical and properly costed. But, despite my plea, we did not do this ... and the direct result of our failure to provide this detail has been to allow our political opponents to land the sort of punches on us that Carwyn did yesterday.
Carwyn is wrong. The purpose of the tax or levy (it will be a tax if we are allowed to introduce new taxes under the proposed Wales Act, but if the Assembly is not given these powers it can be introduced under existing powers as a levy) is to reduce the consumption of sugar as a public health measure designed to combat the very high level of obesity in Wales. Yet even after allowing for this reduced consumption, the money raised will fund a thousand additional doctors. It is a win-win proposal.
But I'm sorry to have to say that Carwyn had a point when he said that we have been silent on the issue and called the proposal a cheap and uncosted political slogan. Unless we publish the detail to back it up, that is all it is.