It may be convenient to classify them as empirically and theoretically based. They are both theoretically and practically intriguing. Creating these files requires determining which of the various theoretically possible protein conformations actually exist. They tentatively confirmed that a fission bomb was theoretically possible. However the method gives a theoretically exact result. Matrix decomposition methods simplify computations, both theoretically and practically. Cusped confinement was explored theoretically and experimentally. Hence, only 1.5% is free and theoretically bioactive. He explained that music consumes most of the time he could theoretically devote to religion. This was considered his most theoretically sophisticated work. Either case is usually shown against outlines for the theoretically favored regions. There is no theoretically ideal solution to this problem. The researcher should actively search for data that is theoretically relevant. Even non-agglutinative languages may allow word formation of theoretically limitless length in certain contexts. Maryland has shale formations containing natural gas, where fracking is theoretically possible.