Looks like I spoke too soon....Just after I hit the send button on Wednesday's rivetingÂ Motley Fool Take Stock free email, I read that Goldman Sachs hadÂ withdrawnÂ their prediction of a September interest rate cut.As you may recall, I did say an interest rate cut next month was a long shot. It seems the boffins at Goldman now agree.Now Goldman have a brand new prediction, that they "...do not expect the RBA to lift interest rates until the fourth quarter of 2015."Yes, Foolish readers, you read that correctly.The end ofÂ 2015. That's the end ofÂ nextÂ year. Before interest rates evenÂ startÂ going up. And that's presuming the Australian economy improves from here...Lucky I don't make predictions. If I did, I could probably get a job at Goldman Sachs, earning millions. Problem is, I'd be just as wrong as them.What is clear, however, is whichever way you look at it, low interest rates are here to stay. Position your investments accordingly.