A COUNTRY with countless problems like Indonesia may need to dream. But there are different kinds of dreamers: those who pursue their aspirations through proven scientific works, and those who rely on illusions.

The first kind of dreamers remind us of someone like Rudolf Christian Diesel, who in 1893-at the age of 35-discovered that vegetable oils could be an alternative source of fuel, like peanuts and the castor oil bean. The finding changed the