It is a pity that Lord Broers has joined the parade of denialists who discuss distorted versions of obsolete scenarios to the exclusion of all research in the field since 1990. The Royal Society report twice misstates my views, citing publications in which I state the opposite.
For those interested in a brief summary, I recommend my essay for the AAAS, "The Future of Nanotechnology: Molecular Manufacturing". For more technical information, I recommend the discussion and bibliographies my website, e-drexler.com.
K. Eric Drexler