When there is a choice between two theories, there may be no purely logical way to decide. It also depends on what the community of scientists decides is important. The community of scientists made these decisions and the result is what we call progress. Some would argue that this is little more than mob rule but the institutions and values of science are far more than mob rule. Other factors do play a role in real decision making, but no arguments can save a theory that doesn t fit the data for very long.
Science is a slow process.
There is no need to rush to judgement. In a trial, the jury has no choice but to decide guilty or not guilty. Public reporting and discussion. Scientists argue for their theories, but they don t have impassioned, public debates. To keep things calm and careful, their communication is carried out in journals and at meeting.