How this receipt has changed
Alpha radiation from polonium-210 or lead-210 in cigarette smoke may be a significant causative factor in human lung cancer.
This receipt has not been rewritten since it was published on 04 Oct 2026. Its current version is 1.
Weight is the one the receipt's balance bar uses: every source counts 1, plus a bounded bonus for how often it has been cited, so one famous paper cannot outweigh three dissenting ones (at most 3x a bare source). It is a reading aid built from facts the receipt already stores, not the engine's confidence.
The same numbers as a table
| Version | Verdict | For | Against | Weight for | Weight against | From |
|---|---|---|---|---|---|---|
| v1 | SUPPORTED | 4 | 0 | 4.65 | 0 | 2026-10-04 |
Every version
- Version 1 (current)in effect since 04 Oct 2026SUPPORTED4 for, 0 against · confidence 86