20. The method for increasing the reliability of word recognition in a user's communication of claim 17 , further comprising: using a first certainty value assigned the first word to generate the initial uncertainty value for the first word, wherein the initial uncertainty value for the first word is the result of subtracting the first certainty value assigned the first word from one; using a second certainty value assigned the first word to generate the second uncertainty value for the first word, wherein the second uncertainty value for the first word is the result of multiplying the initial uncertainty value for the first word by one minus the second certainty value assigned the first word; and using a new certainty value assigned the first word when the first word is hypothesized as being included in a new component of the user's communication to generate the new uncertainty value for the first word, wherein the new uncertainty value for the first word is the result of multiplying a present uncertainty value of the first word by one minus the new certainty value assigned the first word.
17. A method for increasing the reliability of word recognition in a user's communication, the method comprising: generating by a processing unit an initial uncertainty value for a first word that is hypothesized as being included in a first component of the user's communication, the initial uncertainty value generated from a first lattice, the first lattice generated based on speech recognition; generating a second uncertainty value for the first word when the first word is hypothesized as being included in a second component of the user's communication, wherein the second uncertainty value is based at least in part on the initial uncertainty value for the first word and a second lattice, the second lattice generated based on speech recognition; saving the second uncertainty value for the first word as the first word's present uncertainty value; generating a new uncertainty value for the first word when the first word is hypothesized as being included in a new component of the user's communication, wherein a new component of the user's communication is any component of the user's communication other than the first component or the second component of the user's communication, and wherein the new uncertainty value for the first word is based at least in part on the present uncertainty value of the first word; saving the new uncertainty value for the first word as the first word's present uncertainty value; and designating the first word reliable if a present uncertainty value of the first word has a defined relationship to an established confidence threshold.