Pennsylvania reopening plans and the "new normal"

No.11703799 ViewReplyOriginalReport
Yet another state indicating that they do not want to return to normal, but want to impose a "new normal", and that social distancing and enforced mask wearing will be expected even LONG AFTER covid-19 has ceased to be a threat.

Can anyone on /sci/ explain what is the scientific basis for this? Why can we not just go back to normal? Why are governments trying to force a "new normal" of an incredibly socially distant society forever?