I can tell if your software is open-source if you leave the source code on your website. I can't tell if "free-range" eggs were actually laid by hens allowed to

I can tell if your software is open-source if you leave the source code on your website. I can't tell if "free-range" eggs were actually laid by hens allowed to range freely. Whether something is open-source or not is pretty obvious; whether something is organic or not is difficult to verify and not generally well-understood yet.