Some believe that massive funding of research and development is not as good as directly importing proven new fuels developed in other countries. Others advocate re-setting the development targets for bio-energy. Still others stress accelerating technical innovation and striving to keep pace with the rest of the world. Amid the morass of conflicting opinions, there is an issue that is less contentious: refining alcohol from cellulose.
有人認為與其投入大量經費研發，不如直接進口其他國家已發展成熟的新燃料商品；有人倡議重新制訂生質能源發展目標；有人則強調加速技術創新，努力追趕世界潮流，意見紛呈中爭議較少的是，研發由纖維素提煉酒精。