In an exam in school, students are expected to solve problems with limited references and tools to assess their knowledge. On the other hand, in the science & professional world, there are no such limitations. We are free to use any resources available to us to solve the problems at hand.
Some flat-Earthers become annoyed every time we use some things like computer simulations and other tools to solve problems, especially when they help us prove spherical Earth. They would proclaim because they feel they can solve their own specific problem with pen and paper, they think they are more right than these “cheaters” with computers and other technology. In reality, the tools being used do not decide which one is more right. These flat-Earthers are merely unfamiliar with real-world cases beyond school.