The use of LMs for collision-based computation has many advantages (additional degrees of freedom) over previous approaches. Due to their nature, it is possible to carry cargo in the LMs, which adds an additional dimension to the calculations. It is also possible to initiate chemical reactions within marbles by their coalescence . By varying the diameters of the LMs, different sizes can represent different values, and will have different relative trajectories -removing the limitations of a binary system. Use of a magnet can remove the coating from magnetic marbles, which (if done on a superhydrophobic surface) can roll freely down a slope as droplets, before being reformed using a different coating. Compared to droplet computing , only a tiny portion of the circuit needs to be treated hydrophobic, making larger and more complicated circuits easier and cheaper to construct. These points, combined with LM's ability to be easily merged, levitated , divided , opened/closed , and easily propelled by a variety of methods make LMs a fascinating and potentially prosperous addition to the unconventional computing family.