2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/15510I first comment on some recent advances in computing equipment for CPU-intensive numerical simulations, and on possible developments in the near future. I then discuss some particularly important and yet unsolved problems in dynamics and evolution of galaxies, on which analytical, numerical and observational effort should be focused.8 pages, no figures, in "Galaxy Dynamics: from the Early Universe to the Present", ASP Conf Series, ed. F. Combes, G. Mamon, V. CharmandarisAstrophysicstext