Twitter is a handy source of information and expressing ideas, but making decisions based on it is not always a good idea.

For instance, a tweet from the science-challenged Panera Bread Company recently got a well-deserved roasting on social media. Panera tweeted that sodium benzoate, a commonly used preservative, should not be in food because it’s also in fireworks. Not only does the preservative have a pretty good track record, it also occurs naturally in some fruits—Mother Nature’s own natural preservative.