Zyvex was mentioned in this nanotechnology issue. However, we think you would be better served by reading “Many Future Nanomachines: A Rebuttal to Whiteside’s Assertion That Mechanical Molecular Assemblers Are Not Workable and Not A Concern.” This rebuttal article was written by K. Eric Drexler, Ph.D.; David Forrest, Sc.D.; Robert A. Freitas Jr., J.D.; J. Storrs Hall, Ph.D.; Neil Jacobstein, M.S.; Tom McKendree Ph.D.; Ralph Merkle Ph.D.; Christine Peterson, M.S.