Ephraim argues for wait-and-see in the face of what he thinks is uncertainty about planetary temperature changes. Of course, he is wrong to begin with. The data is conclusive. But even if we were to agree that it is not, his logic is flawed.
If we lack sufficient data, that means that margin for error in the existing data is greater. And margin of error is given as PLUS or MINUS.
The consensus among those that study the problem is that the temperature will rise by 2-3º F this century. Ephraim says their data is incomplete. That means their data has a margin of error of lets just say ±3º. So, maybe it will turn out that with better data and better models the temperature will actually be about the same in 100 years as it is today.
BUT IT IS JUST AS LIKELY with better data and better models that we will find the temperature will rise even more than the current predictions. The margin of error is PLUS or minus.
Doing nothing now is stupid.