The mistake is made...and ignored.

In the end of September, Singapore government raised the tariff of electricity for 21% based on the projection that oil price would reach USD150 in 3 months. Now 1 1/2 month has passed. The petrol price dropped from then USD100 to today's USD57.

Singapore is always acting fast, even so fast that it acts for something has not yet happened. But for something has already happened (petrol price has dropped), nothing is done.

Good job!