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“I complicate, therefore I am” (Business Line, April 29) states that economics cannot establish causality beyond reasonable doubt. But this is something economists find hard to digest. Economists may be better off taking some lessons from a field which many equate with astrology: technical analysis.

Technical analysis always starts with ‘if’; if Nifty crosses B, it may go up to D and you can buy Nifty with a stop loss at A; you may book profit at C. A technical analyst understands that pricing is a function of demand, supply and news flow and it may go in any direction. So there are always back-up plans, depending on the current market dynamics.

Ranjith Menon, Ernakulam

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