| 1 | The Knowledge gaps that hold us back. | |
| 2 | But there are big risks, too, in aggressively pushing change. | |
| 3 | People would be wise to abandon rash inclinations and instead try in earnest. | |
| 4 | James Sweeney of Stanford University's Precourt Energy Efficiency Center calls the plan "very aggressive. | |
| 5 | He was really afraid to venture into entirely new ground, to question ideas which had been accepted from time immemorial. |