Is It Predictable, Totally Unpredictable or Something in Between?

The world is much simpler when we deal with things that function according to rules, like fine men's electrons. But clearly, economies and markets aren't governed by natural laws, thanks to the involvement of people. And since our world is predictable at some times and unpredictable at others, what good are forecasts if we can't tell which is which? I learned a new word from reading ferguson's article, deterministic. It's defined by oxford languages as causally determined by preceding events or natural aws. The bottom line for me is that it's in between, but unpredictable enough that most forecasts are unhelpful.