Brian E Carpenter wrote: > we do not know what constitutes an acceptable experiment on > the Internet. Maybe something that doesn't harm folks who don't participate. For whatever reasons, maybe because they don't know about the experiment. > focus on the general issue rather than the specifics of any > case. "Voluntary" and "opt-in" appear to be keywords. A potentially harmful experiment with non-consenting participants is dubious. Intentionally disrupting other running experiments or breaking standards is also dubious. Maybe the latter is acceptable if it's a documented purpose of the voluntary experiment, and causes no "real harm" for others. For some values of "real harm" - one possible outcome of such experiments could be "the whole world adopted it, what next ?" Bye, Frank _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf