For something that is permissible even in a thousand, not in a missile

A. I have no explanation. I once saw an article by an artist that offered an explanation, but it didn’t sound plausible to me. on. It’s simple. According to most of the Rishonim, this is a rabbinical decree: until you eat something that is forbidden (based on a majority annulment), you eat it with permission (when time passes and it becomes permissible and they will not need an annulment). The method of the Ran, as is well known, is different (he explains that it is a type of food that is not invalid, and this means that it is from the Torah. However, this is a unique method, and it is also difficult in the Gemara itself, since in the Gemara, something that is permissible also tightens the laws of spikot, and the Ran’s opinion is not there). It is true that there is an assumption here that eating something that is invalid in large quantities is eating something that is forbidden. Hence, the aggravation of not eating something that is invalid in large quantities is an aggravation that has a place (contrary to what some recent scholars have written). And perhaps it can be explained that this is an educational law and not a substantive one.