S. Galam's referendum model
Eleven years ago I have written a post about many particle interactions in the kinetic exchange models. Few days ago I have stumbled upon that post and noticed that it features a model that has little in common with kinetic exchange models. Under these circumstances the only natural thing is to write a dedicated post highlighting the said model.
So, consider how we make decisions. Not all of us are skilled and informed enough to make decisions on our own in all possible everyday scenarios. I may be a physicist, but I do not understand some branches of physics well enough. I am not speaking about the questions outside my work or hobby expertise. In such cases, we must rely on our social contacts (acquaintances, co-workers, family members, etc.) to help us decide.