2. The hardware-implemented system of claim 1 , wherein said subjective user state data acquisition module configured to acquire at least subjective user state data indicating at least one subjective user state associated with a user comprises: a subjective user state data reception module configured to receive the subjective user state data.
2. The hardware-implemented system of claim 1 , wherein said subjective user state data acquisition module configured to acquire at least subjective user state data indicating at least one subjective user state associated with a user comprises: a subjective user state data reception module configured to receive the subjective user state data. 3. The hardware-implemented system of claim 2 , wherein said subjective user state data reception module configured to receive the subjective user state data comprises: a user interface data reception module configured to receive the subjective user state data through a user interface.