Every load-bearing figure, in one place. Full citations are in Appendix B.
These are the figures the argument rests on. Where a number is a range or an estimate, it is shown as one; where two eras or measures are compared, the comparison is noted. Sources, by chapter, follow in Appendix B.
| Measure | Figure |
|---|---|
| Average THC, 1975 flower | ~1% |
| Average THC, 1995 flower | ~4% |
| Average THC, 2017 flower | ~17% |
| Today's concentrates | 60–90%+ |
| Daily use vs. psychotic disorder (odds) | 3.2× |
| Daily high-potency use (odds) | 4.8× |
| Cannabis-induced psychosis → lasting illness | ~47% |
| Schizophrenia attributable to CUD, young men | up to ~20–30% |
| Users who develop cannabis use disorder | ~3 in 10 |
| THC detectable after quitting (heavy users) | weeks – a month+ |
| Measure | Figure |
|---|---|
| Pediatric edible poison-control calls, 2017 | 207 |
| Pediatric edible poison-control calls, 2021 | 3,054 |
| Daily/near-daily cannabis users, 2022 | 17.7M |
| Daily/near-daily drinkers, 2022 | 14.7M |
| Measure | Figure |
|---|---|
| State cannabis tax revenue since 2014 | >$29B |
| One operator's spend, FL 2024 ballot | ~$145M |
| States capping flower & concentrate potency | 2 (VT, CT) |
| Young Americans ineligible to serve | ~77% |
| WWII draftees classed 4-F | ~30% |
| Young women vs. young men in college | 44% vs 34% |
| Men with no close friends, 1990 → 2021 | 3% → 15% |
A handful of figures above are still in motion: the federal scheduling of cannabis, state potency-cap statutes, and the latest legalization polling. Appendix B flags each and gives its date.