On this day, 160 years ago, on January 20, 1865 (December 23, 1864 in the lunar calendar), American inventor Thompson became the first person to register the patented roller coaster technology. Rollercoaster (English: Rollercoaster, also known as roller coaster) is a motorized amusement facility commonly found in amusement parks and theme parks. LaMarcus Adna Thompson was the first person to register patented technology related to roller coasters (January 20, 1865) and had built more than a dozen roller coasters facilities, so he was known as the "Father of Gravity". A basic roller coaster structure includes climbing, sliding, and reversing. The design of the track may not be a complete cycle. It can also be designed so that the car body moves back and forth on the track. Most roller coasters can accommodate 2, 4, or 6 people in each carriage, and these carriages are connected to each other using hooks, just like trains. Although the roller coaster is scary, it is basically a very safe facility. The movie "Deadline Station 3" claims that the accident rate of roller coasters is about 1 in 250 million, but in reality, the real figure may be even lower. According to surveys by the U.S. Consumer Product Safety Commission (CPSC) and SixFlags, the death rate from roller coasters in 2001 was approximately 1 in 1.5 billion. This means that tourists are more likely to die while driving to the amusement park. Comment: Life always comes first.