This is my thought. I don't think we have to worry if $USD 1=Rs.60. What worries me is what will happen if the fixed exchange between Nepal and India is cancelled. we say $1=Rs.60 based on Indian currency. Someday this fixed exchange rate of 100 India Rupee = 160 Nepali Rupee rule will be voided and then we will see the actual value of Nepali currency and Nepal economy.... that day, there will big economic crisis in Nepal....