Differential pricing for petrol

My friend pointed out to me the price of 1 litre of petrol, as displayed in a prominent sign at the petrol stations. The price was around CAD 1.05 in the morning and reduces in stages to CAD 0.95 at around midnight. The next morning, the price went back to CAD 1.05.

The petrol station used differential pricing to encourage some drivers to fill up the tank during the night hours. This helps to reduce the crowd at the petrol station during the working hours.  It is an interesting way to spread out the queue.  

Perhaps petrol stations in Singapore can consider a similar strategy? It seems to work quite well in Canada.

Wearing masks

I took a flight from Singapore to Vancouver. The only people in the plane wearing masks are  the flight crew and a few Singaporeans. The other passengers did not consider it necessary to wear masks. Were they irresponsible or unaware of the risk? 

I do not think so. I think that they know the risk and have decided that it is the risk is too small to take these precautions. Singaporeans tend to over-react.