It may not be funny, but something prompted me to write this. Anyone who was born in the late 1980s remembers the stages of advertising for toothbrushes.
At first, there were ordinary brushes. Later, they invented a toothbrush. Then the brushes appeared curves, harmony, because of which they better bended and allegedly continued (all remember the advertisement with a man pushing his fist 180 degrees?). They were replaced by brushes with a cross-cut, which should capture even more plaque. Next we have brushes with an additional rubber scarf that "massages" the gums. Then on the other side of the brush appeared a rubber plate that cleans the tongue and cheeks. Well, it’s all over with “silver ions” that defeat microbes on brushes. I am ashamed that I once believed it. Marketing, such as marketing.