What does "indicator" mean?
Native speaker’s answer
Rebecca
An "indicator" is a thing that indicates the state or level of something. It can be a form of measurement, or a trend or fact that represents a bigger insight. Here, "how people stand is a strong indicator or their mindset" means that one's stance can represent how one thinks or feels about the world. Ex: Rising summer temperatures is a strong indicator that climate change is getting worse. Ex: Colder weather is an indicator that winter is coming.