Learning, inference, and decision making with probabilistic user models, including considerations of preferences about outcomes under uncertainty, may be infeasible on portable devices. %, based upon the total mass of the capsule shell. At least a portion of the payload can be removed from the original frame. A hash value is obtained by applying a hash function to the prefix-free value. Said second partial section connects to the first partial section and extends essentially up to the optical component located at the extraction end, whereby the entire length of the first and second partial section is at least provided with a length that renders the extraction end of the fat fiber mechanically stable. The methods and compositions of the invention can be used in nucleic acid sequencing reactions as well.