addendum to my science experiment

A concerned reader (who am I kidding?  We all know it was Einstein) sent me an article explaining ethylene's effects more fully.  It lists avocados as producing ethylene but not sensitive to it, which is perhaps why my experiment failed.

And no I haven't gone back to my food friends to let them know of their mistake.  I would want to know if it were me, but it feels rude to correct people who are generally way more knowledgeable than I in this area.  Perhaps their avocados are susceptible to the Placebo Effect.  :)