1. An apparatus, comprising: an input section to receive user inputs; a memory to store said user inputs; and a calculator, wherein: said input section receives a request from a consumer describing one or more transactions in which said consumer may wish to engage, at least one offer from at least one potential seller of said one or more transactions, and one or more predictive assessments from one or more predictors corresponding to said at least one offer, each said predictive assessment predicting a satisfaction said consumer will experience contingent on accepting one or more offers from said at least one potential seller, said consumer request, each said at least one offer, and each said at least one or more predictive assessments being stored in said memory, and said calculator uses said predictive assessments to calculate at least one aggregated prediction for said at least one offer, based on a prediction aggregation mechanism.