26. The machine system of claim 8 wherein: the relatively current topic of focus or of interest that the first user is predetermined to likely have in his or her mind is automatically determined based on a plurality of temporally and/or spatially spaced apart items of informational material that the machine system has automatically detected the first user to have been recently focusing upon.
26. The machine system of claim 8 wherein: the relatively current topic of focus or of interest that the first user is predetermined to likely have in his or her mind is automatically determined based on a plurality of temporally and/or spatially spaced apart items of informational material that the machine system has automatically detected the first user to have been recently focusing upon. 37. The machine system of claim 26 wherein the automated user activities monitor is further configured to automatically detect and record indications of intensity or rapidity of emotional involvement concurrently associated with the machine usage activities of the first user.