sweetpea86 writes: The European Union's proposal to give internet users the “right to be forgotten” is unfeasible, according to Bob Plumridge, chief technology officer for EMEA at Hitachi Data Systems. Plumridge believes that the people who are coming up with ideas to improve privacy do not understand the limits of today's technologies. He said that, for the right to be forgotten to become a reality, all of these individual records would need to be linked together. However, having links between all copies of the data means that if one copy is corrupted, all the others are at risk of being affected.
We warn the reader in advance that the proof presented here depends on a
clever but highly unmotivated trick.
-- Howard Anton, "Elementary Linear Algebra"