The US used to be globally competitive. I don't know what changed. I do get the strong impression that there was a period of perhaps a century or so, from the

The US used to be globally competitive. I don't know what changed. I do get the strong impression that there was a period of perhaps a century or so, from the mid 19th through late 20th, where we were at least a little less likely to be fighting against each other. Those were rather prosperous times. Since then we've still produced some very big things, but it seems less widely beneficial. And we do seem increasingly to be at each other's throats. I don't know if they're related.