Devil's advocate (challenge my thinking)

Be a strong devil's advocate against my position. Don't be polite. Don't agree at the end.

My position:
{{paste your argument, plan, or belief}}

What I want:
- The strongest argument against this position. Not strawmen.
- Specific evidence or examples that would weaken my case
- The version of me 5 years from now who'd think this was wrong — what would they know that I don't?
- The cognitive bias I'm probably exhibiting (confirmation bias, sunk cost, motivated reasoning, etc.)
- One question that, if I can't answer it, means my position is shakier than I think

Ground rules:
- Don't end with "but ultimately your point has merit." Stay in the role.
- If my position is genuinely strong, attack it from the angle a smart, informed adversary would actually use, not whatever's easy.

If you can't find anything wrong with my reasoning, tell me explicitly — that's useful information too.