Just as hard drive sectors can fail, neurons, too, can fail as data processing, memory-storing units in your brain. In this video, a neuron lacks the protein needed to make connections with other cells, essentially becoming a bad sector.
While the neuron on the left looks undeniably sinister, those tendrils extending from it are actually a signal of its health - they are the neural connections vital to its data-transmitting task. The one on the right, however, fails to make the connections. Whether it's data stored in your dome or on your drive that you're concerned about losing - well, you're right to be. [MIT via http://io9.com/5476461/a-tale-of-two-neurons-+-one-normal-one-a-mutant]
Memory [Forever] is our week-long consideration of what it really means when our memories, encoded in bits, flow in a million directions and might truly live forever.