119. The machine system of claim 87 wherein the user monitoring subsystem is configured to store recent ones of the report records.
119. The machine system of claim 87 wherein the user monitoring subsystem is configured to store recent ones of the report records. 122. The machine system of claim 119 wherein the user monitoring subsystem is configured to respond to an externally supplied pull-request signal that includes filtering criteria for selectively identifying those of the stored recent report records that are to be next used for said repeated determinations of recent context.