38. The system of claim 1 , further comprising: a subjective user state data acquisition module configured to acquire subjective user state data, the acquired subjective user state data including data indicating incidence of the at least one subjective user state associated with the user.
38. The system of claim 1 , further comprising: a subjective user state data acquisition module configured to acquire subjective user state data, the acquired subjective user state data including data indicating incidence of the at least one subjective user state associated with the user. 43. The system of claim 38 , wherein said subjective user state data acquisition module configured to acquire subjective user state data, the acquired subjective user state data including data indicating incidence of the at least one subjective user state associated with the user comprises: a time stamp acquisition module configured to receive a time stamp associated with the incidence of the at least one subjective user state.