Tiered Response Format

Provide your response in three tiers:

TIER 1 - HEADLINE (1 sentence):
The absolute essential takeaway if I read nothing else

TIER 2 - SUMMARY (1 paragraph):
Key points and reasoning, readable in 30 seconds

TIER 3 - FULL DETAIL (as needed):
Complete explanation with nuance, evidence, and caveats

MY QUESTION:
[Your question]