Every factual sentence carries assertions checked against the recorded evidence: references must resolve, figures and quotations must be in the cited passage, arithmetic must reproduce, and an independent reviewer must approve the wording. Automated validation says whether the narration is ready for human editorial review; it does not establish truth.
Open a sentence to see its assertions, their status and the passages behind them. Sentences without a marker make no factual claim.
warning figure-in-non-factual (deterministic): a rhetorical sentence carries a figure; the reviewer must confirm it is not a representative outcome
verified s02.a Several sources say organic farming yields less than conventional farming.
supported (approved): no direct support, 1 contradicting, 3 source statements.
info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.
verified s02.b Other sources say organic farming yields as much as conventional farming or more.
supported (approved): no direct support, 2 contradicting, 2 source statements.
info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.
verified s04.a AsapSCIENCE says organic crop yields are 25% lower on average than conventional ones.
supported (approved): no direct support, 1 contradicting, 1 source statement.
info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.
verified s05.a Mark Hyman says you can grow as much food or more without the chemicals conventional farming uses.
supported (approved): no direct support, 2 contradicting, 1 source statement.
info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.
verified s07.a Ponisio and colleagues' meta-analysis found organic yields 19.2% lower than conventional yields, with a 95% credible interval from 15.5% to 22.9%.
disputed (qualify): 1 supporting (1 independent, strongest 0.75), 1 contradicting.
warning needs-qualification: Contradicted by AAP 2012 clinical report on organic foods, abstract: AAP clinical report (abstract only) says well-designed farming studies show yields comparable to conventional farming. Present the disagreement: name the studies on each side instead of stating one side as fact.
verified s07.b Ponisio and colleagues found a bias in the literature towards reporting higher conventional to organic yield ratios, so their 15.5% to 22.9% yield gap may still be an overestimate.
supported (approved): 1 supporting (1 independent, strongest 0.6).
info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.
verified s08.a In Ponisio's meta-analysis conventional yields were significantly higher than organic for all crop types, and the yield ratios of most crop types did not differ significantly from one another.
disputed (qualify): 1 supporting (1 independent, strongest 0.75), 1 contradicting.
warning needs-qualification: Contradicted by AAP 2012 clinical report on organic foods, abstract: AAP clinical report (abstract only) says well-designed farming studies show yields comparable to conventional farming. "all" is stronger than the evidence (strongest support 0.75). Present the disagreement: name the studies on each side instead of stating one side as fact.
verified s09.a Ponisio's meta-analysis found a smaller organic yield gap than recent earlier meta-analyses had reported.
disputed (qualify): 1 supporting (1 independent, strongest 0.75), 1 contradicting.
warning needs-qualification: Contradicted by AAP 2012 clinical report on organic foods, abstract: AAP clinical report (abstract only) says well-designed farming studies show yields comparable to conventional farming. Present the disagreement: name the studies on each side instead of stating one side as fact.
verified s10.a Mie and colleagues' review, citing earlier work, says crop yield is typically limited by plant nitrogen availability in organic but not in conventional systems.
disputed (qualify): 1 supporting (1 independent, strongest 0.3), 1 contradicting.
warning needs-qualification: Contradicted by AAP 2012 clinical report on organic foods, abstract: AAP clinical report (abstract only) says well-designed farming studies show yields comparable to conventional farming. Present the disagreement: name the studies on each side instead of stating one side as fact.
verified s11.a The AAP clinical report says well-designed farming studies demonstrate organic yields comparable to those of conventional farming techniques.
disputed (qualify): 1 supporting (1 independent, strongest 0.25), 2 contradicting.
warning needs-qualification: Contradicted by Ponisio 2015 meta-analysis, organic yield gap: Hierarchical meta-analysis of 115 studies (1071 comparisons, 38 countries) found organic yields 19.2% lower (95% CI 15.5-22.9%), with conventional higher for all crop types; the authors note publication bias may overstate the gap. Contradicted by Mie 2017 review, health effects of organic food and farming: The review notes generally lo…
verified s12.a The AAP report's abstract states comparable yields in one sentence without giving a yield figure or naming the studies.
disputed (qualify): 1 supporting (1 independent, strongest 0.25), 2 contradicting.
warning needs-qualification: Contradicted by Ponisio 2015 meta-analysis, organic yield gap: Hierarchical meta-analysis of 115 studies (1071 comparisons, 38 countries) found organic yields 19.2% lower (95% CI 15.5-22.9%), with conventional higher for all crop types; the authors note publication bias may overstate the gap. Contradicted by Mie 2017 review, health effects of organic food and farming: The review notes generally lo…
warning needs-human (review): The clause mirrors the authors' summary at L99, but the paper's results (L87, uncited) show the 9% and 8% gaps compare diversified organic fields with undiversified conventional ones; when both systems were polycultures the gap was 21 +/- 6%, and with similar rotations 20 +/- 2%. A viewer may hear that diversified farming in general nearly closes the gap. The writer cannot cite L87 without a person authorising a corpus change (one verdict per claim and document).
verified s13.a On Ponisio's pooled comparisons organic yields were lower than conventional, by 19.2% on average.
disputed (qualify): 1 supporting (1 independent, strongest 0.75), 1 contradicting.
warning needs-qualification: Contradicted by AAP 2012 clinical report on organic foods, abstract: AAP clinical report (abstract only) says well-designed farming studies show yields comparable to conventional farming. Present the disagreement: name the studies on each side instead of stating one side as fact.
verified s13.b Ponisio and colleagues say their yield-gap estimate may still be an overestimate.
supported (approved): 1 supporting (1 independent, strongest 0.6).
info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.
verified s13.c Ponisio and colleagues found the yield gap dropped to 9% with multi-cropping and 8% with crop rotations.
supported (approved): 1 supporting (1 independent, strongest 0.6).
info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.
verified s15.a Harvard Health says organic foods are clearly healthier for the planet.
supported (approved): no direct support, 1 qualifying, 1 source statement.
info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.
verified s16.a The AAP clinical report says organic farming has been demonstrated to have less environmental impact than conventional approaches.
qualified (qualify): 1 supporting (1 independent, strongest 0.3), 1 qualifying.
warning needs-qualification: Clark and Tilman 2017, environmental impacts of farming systems: Per unit of food, organic used 15% less energy but needed 25-110% more land and had 37% higher eutrophication, with similar GHG and acidification; the authors say this does not make conventional more sustainable given its pesticide and nutrient inputs, which they could not measure. Add the qualification: the evidence supports a narro…
warning missing-qualification (review): Clark and Tilman say most of the 742 LCA analyses are from high-input systems in Europe and North America, so the results reflect industrialised, high-input farming; the package premise lists this limit. The narration gives the land, energy and eutrophication figures (s18-s19) without it; s21's local-scale caveat is a different limit.
warning needs-human (review): The revision-1 scope warning stands (Europe/North America, high-input systems, L468-L476), but the writer cannot cite it: the store already holds the one Clark and Tilman verdict for this claim. Approved because s21 carries a scope limit and the figures are not misleading for the viewer's likely context; only an editor can add the passage.
verified s17.a Clark and Tilman compared organic and conventional systems per unit of food, limiting comparisons to within the same publication.
supported (approved): 1 supporting (1 independent, strongest 0.7).
info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.
verified s18.a Per unit of food, organic systems required 25% to 110% more land than conventional systems.
supported (approved): 1 supporting (1 independent, strongest 0.7).
info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.
verified s19.a Per unit of food, organic systems used 15% less energy and had 37% higher eutrophication potential than conventional systems.
qualified (qualify): 1 supporting (1 independent, strongest 0.7), 1 qualifying.
warning needs-qualification: Clark and Tilman 2017, environmental impacts of farming systems: Per unit of food, organic used 15% less energy but needed 25-110% more land and had 37% higher eutrophication, with similar GHG and acidification; the authors say this does not make conventional more sustainable given its pesticide and nutrient inputs, which they could not measure. Add the qualification: the evidence supports a narro…
verified s20.a Per unit of food, organic and conventional systems did not significantly differ in greenhouse gas emissions.
supported (approved): 1 supporting (1 independent, strongest 0.6).
info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.
verified s20.b Reliance on manure increases the share of reactive nitrogen in organic systems that turns into nitrous oxide, a potent greenhouse gas, causing similar emissions.
supported (approved): 1 supporting (1 independent, strongest 0.6).
info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.
verified s21.a Clark and Tilman say their within-publication results indicate differences at a local scale and that impacts might differ at a regional, national or global scale.
supported (approved): 1 supporting (1 independent, strongest 0.7).
info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.
verified s22.a Clark and Tilman say organic systems' higher land use and eutrophication should not be taken to mean conventional systems are more sustainable, since conventional practices need more energy and rely on high nutrient, herbicide and pesticide inputs that can harm human health and the environment.
qualified (qualify): no direct support, 1 qualifying.
warning needs-qualification: Clark and Tilman 2017, environmental impacts of farming systems: Per unit of food, organic used 15% less energy but needed 25-110% more land and had 37% higher eutrophication, with similar GHG and acidification; the authors say this does not make conventional more sustainable given its pesticide and nutrient inputs, which they could not measure. Add the qualification: the evidence supports a narro…
verified s23.a Clark and Tilman found ruminant meats have impacts 20 to 100 times those of plant-based foods for all indicators examined, and that the difference between foods is large compared to the difference between production systems.
qualified (qualify): 1 supporting (1 independent, strongest 0.65).
warning needs-qualification: "all" is stronger than the evidence (strongest support 0.65).
verified s24.a Per unit of food, organic systems used less energy, needed more land, had higher eutrophication potential and similar greenhouse gas emissions compared with conventional systems.
qualified (qualify): 1 supporting (1 independent, strongest 0.7), 1 qualifying.
warning needs-qualification: Clark and Tilman 2017, environmental impacts of farming systems: Per unit of food, organic used 15% less energy but needed 25-110% more land and had 37% higher eutrophication, with similar GHG and acidification; the authors say this does not make conventional more sustainable given its pesticide and nutrient inputs, which they could not measure. Add the qualification: the evidence supports a narro…
info repetition (review): 'Per plate of food, the answer here was mixed' re-gives s24's answer in the close; short and it carries the 'better per what' lesson, so not held.
20 scenes, 4:21 at 150 words per minute including pauses. Narration is copied from the script; every chart value and on-screen citation is checked against a passage.
1. sc01 · 0:00 to 0:11 typography
Picture two fields growing the same crop, one farmed organically and one not. At harvest, does the organic field come up short, and by how much?
Visual. The question types on, large and centred, as it is spoken; 'come up short' turns amber.
On screen. Does the organic field come up short?
2. sc02 · 0:11 to 0:19 transition
Ask around and you hear both answers with total confidence: organic grows less, or organic grows just as much.
Visual. Split field: left half reads 'organic grows less', right half 'organic grows just as much', each appearing as the narration says it.
On screen. organic grows less / organic grows just as much
3. sc03 · 0:19 to 0:27 typography
And the answer sets up a second question: if organic does grow less, is it still the greener choice?
Visual. The second question types on; 'greener' turns green-amber and holds.
On screen. Is it still the greener choice?
4. sc04 · 0:27 to 0:34 typography
AsapSCIENCE told its viewers that "organic crop yields are 25% lower on average than conventional ones".
Visual. Quote card: the words appear as spoken; '25% lower' turns amber.
On screen. "organic crop yields are 25% lower on average than conventional ones"
Cite. AsapSCIENCE, YouTube
5. sc05 · 0:34 to 0:44 typography
Mark Hyman says the opposite: "you can grow as much food or more food better food without all those chemicals". So who is right?
Visual. Quote card: the words appear as spoken; 'as much food or more' turns amber; the card dims on 'So who is right?'.
On screen. "you can grow as much food or more food better food without all those chemicals"
Cite. Mark Hyman, MD, YouTube
6. sc06 · 0:44 to 1:08 data-chart
A meta-analysis by Lauren Ponisio and colleagues pooled side-by-side yield comparisons and found organic yields 19.2% lower than conventional, with a likely range of 15.5 to 22.9%, and the authors warn that even this may overstate the gap, because the published studies lean towards reporting bigger conventional wins.
Visual. Three tiles: the central 19.2% lands first and largest, then the 15.5% and 22.9% ends of the range flank it as the range is spoken.
| Organic yields lower by | 19.2% | 19.2 | percent | Ponisio 2015 meta-analysis, organic yield gap, lines 65-L65 |
| Low end of range | 15.5% | 15.5 | percent | Ponisio 2015 meta-analysis, organic yield gap, lines 65-L65 |
| High end of range | 22.9% | 22.9 | percent | Ponisio 2015 meta-analysis, organic yield gap, lines 65-L65 |
7. sc07 · 1:08 to 1:23 document-excerpt
Conventional came out ahead for every crop type the study grouped, and for most of those types the gap was about the same size. That gap is real, but it is smaller than the ones earlier meta-analyses had reported.
Visual. The results paragraph; 'significantly higher than organic for all crop types' highlights on s08.
8. sc08 · 1:23 to 1:40 document-excerpt
Why lower at all? A review of organic food and health, citing earlier work, points to fertiliser: in organic systems crop yield is typically limited by how much nitrogen the plants can get, which is not the case in conventional systems.
Visual. The fertilisation paragraph of the review; the nitrogen sentence highlights as it is spoken.
Cite. Mie et al. 2017, review
9. sc09 · 1:40 to 1:57 document-excerpt
Not everyone agrees: a clinical report for pediatricians says well-designed farming studies show organic yields comparable to conventional farming. But in the report's summary, the part we could read, that is one sentence, with no yield figure and no studies named.
Visual. The AAP abstract lines; 'yields comparable to those' highlights on s11, then the rest of the abstract dims on s12 to show it is one sentence.
10. sc10 · 1:57 to 2:13 data-chart
So on the pooled data, yes: organic fields grew less, by roughly a fifth or perhaps a little less, but where crops were rotated or grown in mixtures the gap shrank to about 8 or 9%.
Visual. Three horizontal bars: the pooled 19.2% gap first, then the shorter multi-cropping and crop-rotation gaps grow in as 'rotated or grown in mixtures' is spoken.
| All comparisons | 19.2% | 19.2 | percent | Ponisio 2015 meta-analysis, organic yield gap, lines 65-L65 |
| Multi-cropping | 9 ± 4% | 9 | percent | Ponisio 2015 meta-analysis, organic yield gap, lines 95-L99 |
| Crop rotations | 8 ± 5% | 8 | percent | Ponisio 2015 meta-analysis, organic yield gap, lines 95-L99 |
11. sc11 · 2:13 to 2:25 typography
Which raises the next question: if each organic field grows less, does organic need more land for the same food, and does that undo its green reputation?
Visual. The question types on; 'more land' turns amber.
On screen. Does organic need more land for the same food?
12. sc12 · 2:25 to 2:30 typography
Harvard Health put it plainly: "Organic foods are clearly healthier for the planet".
Visual. Quote card: the words appear as spoken; 'healthier for the planet' turns amber.
On screen. "Organic foods are clearly healthier for the planet"
Cite. Harvard Health Publishing
13. sc13 · 2:30 to 2:38 typography
The same pediatric report agrees, saying organic farming "has been demonstrated to have less environmental impact than conventional approaches".
Visual. Quote card: the words appear as spoken; 'less environmental impact' turns amber.
On screen. "has been demonstrated to have less environmental impact than conventional approaches"
14. sc14 · 2:38 to 2:49 typography
But a meta-analysis by Clark and Tilman measured the impacts per unit of food, not per field, using studies that assessed both systems within the same publication.
Visual. One line: 'per unit of food, not per field'; 'per unit of food' turns amber.
On screen. per unit of food, not per field
15. sc15 · 2:49 to 3:21 data-chart
Measured that way, organic systems needed 25 to 110% more land. They used 15% less energy, but had 37% higher eutrophication potential, a measure of nutrient pollution. Greenhouse gas emissions came out similar, because relying on manure turns more of a farm's nitrogen into nitrous oxide, a potent greenhouse gas. The authors add that these are comparisons at a local scale, and the picture might differ regionally, nationally or globally.
Visual. Four tiles, one per indicator, each landing as it is spoken: land 25% to 110% more, energy 15% less, eutrophication 37% higher, greenhouse gas 4% lower (not significant). On s21 the tiles dim slightly to mark the local-scale caveat.
| More land | 25% to 110% | 25 | percent | Clark and Tilman 2017, environmental impacts of farming systems, lines 224-L236 |
| Less energy | 15% | 15 | percent | Clark and Tilman 2017, environmental impacts of farming systems, lines 224-L236 |
| Higher eutrophication potential | 37% | 37 | percent | Clark and Tilman 2017, environmental impacts of farming systems, lines 224-L236 |
| Greenhouse gas, not significant | 4% lower | 4 | percent | Clark and Tilman 2017, environmental impacts of farming systems, lines 224-L236 |
16. sc16 · 3:21 to 3:34 document-excerpt
And they warn against reading this as a win for conventional farming, which uses more energy and relies on high fertiliser, herbicide and pesticide inputs that can harm health and the environment.
Visual. The discussion paragraph; 'this should not be taken as an' highlights as the warning is spoken.
17. sc17 · 3:34 to 3:51 typography
What does dwarf the organic question is the food itself: on every indicator they examined, ruminant meats had 20 to 100 times the impacts of plant-based foods, a difference far larger than the one between farming systems.
Visual. One line lands large: '20 to 100 times'; 'times' holds in amber.
On screen. 20 to 100 times the impacts of plant-based foods
Cite. Clark and Tilman 2017, ruminant meats vs plant-based foods
18. sc18 · 3:51 to 4:02 typography
So per unit of food, organic is not clearly greener: it trades lower energy use for more land and more nutrient pollution, with emissions about even.
Visual. One line: 'not clearly greener'; it lands as spoken and holds.
On screen. not clearly greener
19. sc19 · 4:02 to 4:10 typography
The next time a label or a video says organic grows just as much, ask which studies, and how many.
Visual. The question types on; 'how many' turns amber.
On screen. Which studies, and how many?
20. sc20 · 4:10 to 4:21 typography
And when something is sold as better for the planet, ask: better per what? Per plate of food, the answer here was mixed.
Visual. The question types on; 'per what' turns amber and holds to the end.
On screen. Better per what?