Jacob, Just for the fun, and for historical exactness... I would rather invoke Laplace for such an argumentation, whereas Poincaré should better be invoked for a very strong warning against it. Therefore, ignoring the warning and following Laplace, we could even readily extend your suggestion from back-calculating the images to solving the corresponding structures (and thus also writing the corresponding papers). And write "The End" (as nauseam, of course ::)) Philippe Dumas Jacob Keller a écrit : > Perhaps we could use Poincare's argument(?), that knowing one cross > section of the universe in all of its detail would allow forward and > back-calculation of all previous states. Then the universe would be > its own lab notebook/ archive, and we would not need to bother with > all of these technicalities in the first place. The images, then, > could be back-calculated from the current (or any) configuration of > all the universe's atoms, and then we could work better on improving > our crystallography software (and ferreting out fraud) from those... > > JPK > > ******************************************* > Jacob Pearson Keller > Northwestern University > Medical Scientist Training Program > Dallos Laboratory > F. Searle 1-240 > 2240 Campus Drive > Evanston IL 60208 > lab: 847.491.2438 > cel: 773.608.9185 > email: [log in to unmask] > *******************************************