When the mind is not busy with professional obligations, it starts thinking about other things. Mine has not settled down yet to anything specific but it's floating around looking for things to attach itself too. These are some idle thoughts it has had about the future:
The whole concept of 'carcinogen' will be completely reconceived. The current understanding of how specific substances cause uncontrolled cell growth will turn out to be so completely misunderstood that we might as well have ignored everything said about the subject (cause, not treatment, which is understood rather better).
Abortion will go the way of slavery, which it resembles in many ways, in terms of the arguments used to defend it. This will not be because of anything new discovered about the neurophysiology of the foetus, but as a result of changes in orthodox thinking. In other words, it will be 'liberals' who reject it.
The red Indians will turn out not to be the first humans in the Americas and there will be a social revolution of some kind in the USA as people realize they owe them nothing that they don't owe to others. In S America it is harder to say, given the politics of the region.
There will be a revolution of some kind in professional sport. People will lose interest in the sports which are constantly being exposed as corrupt. This will affect the Olympics as well as politicians distance themselves from those sports that have become unpopular and stop funding them.
Speaking of politics, stability and prosperity will appear in unexpected areas of the world, and in some of the most stable countries the governments will take one too many liberties with the freedom and patience of their electorates. Specifically, the EU will collapse and some governments will not survive it.
And more immediately, England will win the Ashes.