the fact that not all the time market has not the same situation and the history itself didn't repeat every year ,it's really too hard to tell what will gonna happen in the future. but yeah you have point wherein just a prediction but remember that it's always too good to be true especially if you have plan to invest for long term @abell008..
All prediction about the future which sometimes we found unrealistic is just drop randomly without any basis, that's why we need to be more careful on that and choose what information we read so that we will not follow the wrong dude who claims that they are experts but in the end they are just doing a random guess about that.
This is the reson we need to do our own research the find the basis of what they are predicting and to find out the realistic possible scenario that might possible come in future.