Well, the problem that at least where I live the experts make statements on public policy outside their domain (e.g., organization of public transport) that are

Well, the problem that at least where I live the experts make statements on public policy outside their domain (e.g., organization of public transport) that are barely practical, if not down right impossible to carry out. OTOH, someone well versed in economy but not in epidemiology or medicine would fail to understand some of the health implications of the current epidemic. It's not a problem per se, but that's where the discussion on public policy comes in, weighing all the opinions from the stakeholders, then making a decision (right or wrong, but taking responsiblity for it). That's why I'm wary of statements like "we will reopen when the scientists say so": it's a deflection of responsibility (they don't carry the burden, rightly so, for their decision, but politics does), and for the politics, a serious step back from its duties.