New Delhi, Nov. 9 -- In the 15th century, there was once a battle between two brothers. Firuz Shah, the Bahmani sultan of the Deccan, feared that his sibling Ahmad was eyeing the throne. He sent, therefore, an army to seize the latter. Ahmad knew he did not have the advantage of numbers on his side. But he did possess above-average common sense. So, at the back of his rather slim cavalry unit, he placed row upon row of oxen, with soldiers mounted on them. From across the battlefield it now looked like Ahmad had a formidable cavalry, ready to devour the enemy. Firuz's generals and troops panicked. In the end, Ahmad's smaller, emaciated force carried the day. Soon the winner planted himself on the throne. It was studded with diamonds and ge...