A friend has said that there is a word meaning the outcome is something very different from that originally envisaged. For example:

> 
> The Australian government introduced a "First time home owner" bonus. Where if you were buying your first house you would get a lump sum cash. Of course everyone selling a house in that price backet put the price up by the same amount as the lump sum and first time buyers didn't benefit at all.
> 
> 
> 

Does anyone know if there is a word meaning this and what it is?