Changi rolls out new trolley system

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After all that talk about tech replacing human workers, here's a local context to consider....
Note the jobs being replaced by technology here are mostly of the low-skilled variant e.g. manually checking whether there are sufficient trolleys parked at the trolley bays, and physically walking to a spot to retrieve food.....In view of our manpower crunch, it is a waste of precious manpower to have such jobs done by human labour in Singapore, esp when they can be better trained and mobilized elsewhere. Having such jobs done by machines is thus not a big concern for us.
In the case of the new trolley system, cost savings is enjoyed not only through less labour needs, but probably also thru' fewer trolleys required (since no longer need to park a fixed number of trolleys at every bay) 
Even mid-skilled jobs like staff manning check-in counters at the airport are being replaced by self-service check-in kiosks. This improves efficiency by cutting queues and alleviating the burden on our manpower crunch.