WHAT is it that prevents India being successful and stops it pulling its vast population of approaching one billion out of the rut of widespread poverty, illiteracy and general non-achievement? Is it, as is usually assumed, the size of the country and the enormity of its problems plus natural characteristics such as the grinding heat and dust and the devastating rains and floods? Is the scale of these challenges and the depth of the disadvantages so great that India is doomed to grow slowly and, more often than not, to fail to achieve?