Nobody relies on consent to perform animal experiments, because animals can't consent, so I'm not sure where you're trying to go with that. Unlike the sandwich

Nobody relies on consent to perform animal experiments, because animals can't consent, so I'm not sure where you're trying to go with that. Unlike the sandwich you're eating, animals are capable of suffering, which is why experimenting with them raises ethical issues to start with. Some people are incapable of comprehending consent, and are incapable of comprehending scientific experiments. Those people can't be subjects of experiments, precisely for that reason. You seem to be arguing for the opposite.