Bayesian inference is a statistical method that allows us to update our beliefs about the state of the world as we receive new information. The basic idea is that we start with a prior belief about the state of the world, and then we update that belief as we get new information. The amount of weight we give to the new information depends on how much we trust it.
In the context of opinion formation, our prior belief is the opinion we currently hold. As we receive new information, we update our opinion based on how much we trust the source of the information and how consistent it is with our prior belief.
The physicists' model uses a machine-learning algorithm to learn the parameters of the Bayesian inference model. This allows the model to adapt to different situations and to make predictions about how people's opinions will change over time.
The model was tested on a dataset of real-world opinion data, and it was found to be able to accurately predict how people's opinions changed over time. This suggests that the model can be used to understand how people form opinions, and to predict how their opinions will change in the future.