Tanner is one of those people I might disagree politically with from time to time but who nevertheless convinces me of the alternative point of view regularly. I see he disses my man Herodotus right off, so now I need to read this to see why.
There is, of course, a margin of "losing" from which no history can return. Anyone know about Khazar history? What happened to those guys? The Mongols happened.
His series on the Soviet "cybernetics" movement was also fascinating.