if/when X is an organism, it is not content within its enclosure, x now is not an object but a searching being.
www.knoesis.org/library/resource.php?id=961
http://www.ece.tamu.edu/~noise/research_files/ICCAD_12_Why_Noise.pdf
http://link.springer.com/chapter/10.1007/978-94-011-5694-3_1#page-1
http://www.drdobbs.com/orthogonal-sequences/184404738
http://www.aicit.org/JDCTA/ppl/052%20JDCTA%20Vol5%20No12.pdf
http://brainden.com/forum/index.php/topic/16142-next-terms-of-two-dimensional-sequences/
https://dl.acm.org/citation.cfm?id=1497096.1497099
https://www.gnu.org/software/kawa/Arrays.html
http://www.worldscientific.com/doi/abs/10.1142/S0129054106004005