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Gas prices are just going to keep rising.
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Home values are going to keep falling.
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Foreclosure rates are going to keep rising.
There is a big pothole in our neighborhood right now. Potholes remind me that I should almost always ignore news reports that say things like...
At the current rate there will be no more of... by 2020
or
At the current rate we will be over run with ... by 2018
Think about it. Potholes start out small and everyone ignores them. They could be caused by water accumulating under the road, but they are made worse by passing cars. As each car runs over the hole it makes the hole bigger. At some point it gets big enough that it bothers us, but not so big that we avoid it. If it keeps growing we'll ultimately start slowing down and trying to miss the pothole to protect our cars.
The pothole might have grown at a fairly steady pace for several weeks or months. Maybe the city will never come and fix it. Still, it does not follow that the pothole will grow at the same rate for ever. It does not follow that the pothole will destroy all cars in the neighborhood.
At some point people will start to find alternate routes or just simply drive around the hole. If cars are the only or primary reason it is growing, then it will stabilize or at the very least stop growing quite as fast when drivers start to take it into account.
The main thing to consider here is that what matters is not only the rate of growth, but also the cause or mechanism of growth. Also, the growth itself has a consequence on the world around it that may eventually impact the growth rate
That's why I ignore so many news reports. They are trying to get attention so they are all too quick to accept the simple projection of short-term trends.