1. A learning aid comprising: control means having defined therein a response data set and a set of messages, said control means having means for selecting a first response data from said set of response data in response to an operator generated problem, and for selecting a second response data from said set of response data in response to an operator generated evaluation input, memory means for storage of said response data set; said means for selecting a first response data including means for randomly choosing an incorrect response data from said response data set as said first response; said means for selecting a second particular response data including means for evaluating if said first response data is appropriate with said operator generated problem; and operator interface means communicating with said control means, said operator interface means having means for receiving said operator generated problem, for receiving said operator generated evaluation data, and for communicating to the operator said first response data and said second response data.