Truth Pattern Analysis
One subject I'm really interested in doing something with, but which I haven't really gotten around to, is the analysis of information in order to learn the truth. Hm, I guess it is a little hard to express what I mean, but I'm talking about the ability to track down what is true and false by studying clues in the information available. There is lots of information that will indirectly reveal whether something else is true or false. Somebody who's trying to deceive and hide the real truth will reveal that fact in an assorment of ways.
Now, the reason I'm so interested in this is that the majority of the population has no clue about what is true or false, and is easily deceived. Most all media is built around that fact. All legal institutions are based on the principle that whoever argues the best for their version of truth, wins, and doesn't have any technology for actually finding truth. Likewise, science is built on models that large numbers of scientists can agree on and demonstrate the validity of, and will happily ignore huge chunks of reality that don't fit the agreed-upon reality.