How do you prevent awkward money situations when organizing group dinners or events with friends?

Can you really trust a universal healthcare system with life-threatening conditions, or is there something to worry about?
Do you find it harder to sleep in a quiet city than in a noisy war zone?
What does it mean to be tolerant in a world that's full of complex and conflicting ideologies?
What's the real reason most smart people never reach their potential, and what actually fixes it?