This is with reference to “Right signals” (April 11). While lauding the alacrity, attention to detail and sharp insight of the official in Prime Minister’s Office (PMO), I am particularly thrilled to read your mention of “approach electrification from the point of view of optimality and reference to projected rate of return on investment”. Coming from the highest and most powerful group of administrators in the country, one must admire the details PMO goes through. Admittedly “Railways have, over the years, electrified high-traffic routes based on this criterion” but for PMO to notice that and flag the issue speaks volumes