A group of researchers submitted a response to a paper on indirect land use change (ILUC) by S. Kim and B. Dale. The central message of this short communication is that "Indirect land use change for biofuels: Testing predictions and improving analytical methodologies" by S. Kim and B. Dale [1], presents a principal inference not supported by its results, that rests on a fundamental conceptual error, and that has no place in the current discussion of biofuels’ climate effects. The paper takes correlation between two variables in a system with many interacting factors to indicate (or contraindicate) causation, and draws a completely incorrect inference from observed sample statistics and their significance levels.
http://www.sciencedirect.com/science/article/pii/S096195341100434X