I've just read an article on a certain red top (not the S*n as I wouldn't touch it with a barge pole) and in it parents of 9 month old baby who they trained to stop wearing nappies at 2 weeks.
I've read the article and it seems they watched the child for cues and then placed her on the potty (it was a tupperware box first apparently) when it looked like she needed to go. It says the husband only needed to do this for 1 day before they knew when the baby would need the potty.
I just don't get the mechanics of it... how do they go out? Does the baby who is 9 months now really 'tell' them that she needs the potty or do they just stare at her all day. I'm not having a go and the parents ingenuity at not having to be dependent on nappies and it being better for the environment but I don't think the theory/practice is as easy as they are letting on.