It’s overcast today. According to the convention between my mom and dad, I’ve learned that my dad bought a "roller stamp". It’s able to stamp random math questions on any sheet of blank paper. And it’s already en route. Human progress is driven by innovations, but not all inventions are positive or helpful; some are malicious too, such as this one. I figure whoever invented this piece of crap must hate children. With one slight drag on a sheet of paper, it can ruin my whole day.

It’s overcast today. According to the convention between my mom and dad, I’ve learned that my dad has bought a roller stamp which is able to stamp random math questions on any sheet of blank paper. And it’s already en route. Human society is driven by innovations, but not all inventions are positive or benevolent, some are malicious too. Here it is. I figure whoever invented this crrrap must hate children. With one slight drag on a sheet of paper, it could ruin my whole day.