Earlier quoted context omitted.
Interesting. Six times is in the same order of magnitude, so it’s entirely plausible that a significant number of people would be affect by MSG with its normal dose. And it’s entirely plausible that some restaurants would put six times the normal dose in some meals, especially fast food restaurants that don’t use standardized measurements like Chinese restaurants.
> Six times is in the same order of magnitude I don't think this sentence has any meaning. What is "the same order of magnitude"? By the normal definition (still not great, but at least it's well-defined), 6 times x is only in the same order of magnitude as x when x is in the range [0,1.7), and it's in the next order of magnitude up when x is in [1.7,10). Even if we adjust that to a log scale, 6x is in the same order…
Still, the point stands - a 6x difference between normally-served dose and a harmful one is way too small to call it non-harmful. How do you even define a normally-served dose? This needs further clarification with better definitions.