Selected (almost exclusively bubble chamber) experiments relating to scaling, limiting fragmentation, and factorization are briefly reviewed. Special attention is paid to exotic versus non‐exotic (in the abcsense) reactions. Also discussed are experiments suggesting non‐limiting behavior for KKproduction below 30 GeV and for cosmic ray interactions above 10 TeV. Observation of isotropic &pgr;±and Koproduction with Bose‐Einstein energy distributions and a common “temperature” equal to the pion mass is reported.