Yes, yes they do. Actually you're right, it's not a panacea, and to most intelligent people they gain this wisdom with age and maturity. However, we have a serious media problem in the US that doesn't always tell the truth. So, it's extremely difficult to learn about the world outside the American bubble.
Also, I did notice you are from the UK. It's much more culturally accepted to learn about the World outside of the UK. America, not so much.
...and how did I come to this conclusion? Because I'm American and live in your country! This isn't some sweeping generalization I heard on the news, I concluded it after having lived here. You'd be shocked how little Americans know and understand about the World.