Only if a long time passes without evidence of harm, we consider that the "evidence" of safety -- there is no other. It is very difficult to claim that somethin

Only if a long time passes without evidence of harm, we consider that the "evidence" of safety -- there is no other. It is very difficult to claim that something new introduced in a complex system is safe, so you weigh what you get right away from it vs. what you might end up paying down the road if it ends up being unsafe. Aspartame does not, in my view, clear that bar.