Craig Loehle | March 22, 2012 at 9:01 pm |
A greenhouse isn’t a great representation of a farm. You can control for all conditions — great for an experimental simulation, terrible for reflecting actuality. It introduces regularity and moderation, which bias the sample.
Now, the _field_ tests that show the same results, those are somewhat better.
Except for the little difficulty of so many of the field tests get no cooperation from the weather, and experimental growers aren’t generally farmers so use different techniques and assumptions.
But sure, the NAS disagree with your foregone conclusion, so must be simply stupid.