Adleman's paper can now be found at http://www.hks.net/~cactus/doc/science/molecule_comp.html All typos are mine, Todd Masco, cactus@hks.net. Please send any corrections to me. -- Todd, cactus@hks.net (I'll be mailing out the Perspectives part tomorrow to anybody who's asked. Since I'm less certain of the copyright issues on that part, I'm only going to send that to individuals rather than putting it up on the web).