This is a math terrier. First of all, when netizens posted 0.5*0.8=0.4 on the Internet, many netizens got the answer without thinking: 0.04, thinking that 0.4 is wrong, and the ensuing mutual spit will bring fire. Its essence is the convenient dissemination of network information.

Can say the wrong answer so seriously. It is because people get information faster and faster, and the convenience of expressing opinions has greatly increased. Just like we brush Weibo online, we can brush it, and then we can express our opinions, but don't let your pseudo-culture cover up your ignorance.

Characteristics of network information dissemination:

Online can not only publish information equally, but also discuss and argue equally. Newspapers can be discussed in the form of symposiums, and TV programs can also be used for viewers to take the stage. However, not everyone can participate in these discussions, not at any time, not all topics can be discussed from time to time. Fourth, participants cannot completely guarantee the innocence of the speaker.