I don't agree with the conclusion here. We can draw the conclusion from this that it takes two months for lockdown to work. But that doesn't mean we can start loosening lockdown restrictions after two months. There's a causal relationship between lockdown and slowing the spread: if you remove the lockdown, the spread will rise again.
Some speculation: a big part of why lockdown takes that long to work is that it seems to take that long for people to start taking things seriously enough for lockdown to work. A few weeks ago in NYC there were still people coughing on each other in public and laughing about it, and my observation of a lot of people's behavior over time is that for some people, they need someone proximal to them to die of it before they will start complying.
I don't say this judgmentally. Personally, I probably didn't take things seriously for about a week after I probably should have, and looking back at why, it wasn't because I didn't care, it was a fear reaction--one very human reaction to something scary is to downplay it or pretend it isn't happening.
Some speculation: a big part of why lockdown takes that long to work is that it seems to take that long for people to start taking things seriously enough for lockdown to work. A few weeks ago in NYC there were still people coughing on each other in public and laughing about it, and my observation of a lot of people's behavior over time is that for some people, they need someone proximal to them to die of it before they will start complying.
I don't say this judgmentally. Personally, I probably didn't take things seriously for about a week after I probably should have, and looking back at why, it wasn't because I didn't care, it was a fear reaction--one very human reaction to something scary is to downplay it or pretend it isn't happening.