Meet Professor Knut Wittkowski. For twenty years he was head of The Rockefeller University's Department of Biostatistics, Epidemiology, and Research Design, and he says that social distancing and lockdown is the absolutely worst way to deal with an airborne respiratory virus.
Further, Professor Knut Wittkowski offers data to show that China and South Korea had already reached their peak number of cases when they instituted their containment measures. In other words, nature had already achieved, or nearly achieved, herd immunity.
So... Who do you believe?