Because there are a lot of imprecise facts and fallacies in advertisements.
Explanation:
Because the goal of an ad is not to instruct; the goal is to sell some solution to a problem you didn't know you had. Thus, the advertisements always appeal to emotional reactions.
In addition to this, there are many imprecisions, some misinformation or incomplete data about what's being taken as a scientific fact.
1789 -- raité élémentaire de chimie is a textbook written by Antoine Lavoisier published in 1789 and translated into English by Robert Kerr in 1790 under the title Elements of Chemistry
