[menghuii]

understood it as that since non vtl arrivals need be quarantined 7-10 days anyways, on-arrivals tests are not necessary.......

yeh must get the facts right
b4 they come sg they must already been tested negative
so this new ruling for non vtl means upon reaching sg
go shn quarantine 7-10days
presumably no other symptoms will arise because of their pre arrival negative tests!

question is what if?

but thats not what sg is basing their theory on.
they choose to hv confidence in pre departure tests coupled with shn/quarantine