Dhaka, Nov. 28 -- Investment in education is always most welcome because it pays what is euphemistically called in spades. The Asian Development Bank's investment plan of $2.0 billion in Bangladesh's education sector over the next three years comes as a great support to the cash-strapped important area. That the country's education sector has ever remained under-invested is indisputable. Even among the South Asian nations, Bangladesh's allocation for education proportionate to gross domestic product (GDP) is the lowest. But this cannot be the only criterion for aid agencies and development partners to come forward with funds for education. They do so only when they consider the recipient country worthy of the support and the exercise is i...