It’s a best seller and an airport book now enough of you have read it, Gavin Menzies’ “1421 - The Year China Discovered the World”.
Overall, were you convinced that the essential thesis is true? Namely that “lost was the knowledge that Chinese ships had reached America seventy years before Columbus and circumnavigated the globe a century before Magellan. They had also discovered Antarctica, reached Australia three hundred and fifty years before Cook and solved the problem of longitude three hundred years before the Europeans…”
I’ve posted this to Great Debates as I suspect there is no factual answer - bits will be possible, other bits not. If I am wrong and this belongs in General Questions then please move it Mr Mod.
Some of the evidence that Menzies’ puts in front of the reading seems pretty good, a lot of it seems OK but I do not feel confident the judge as I suspect I am hearing only half the story, but enough of it just feels wrong to me.
He has set up a web site (http://www.1421.tv/) but there, as in too much of the book for my liking, there is not a real balanced summary of the evidence for and against and then a conclusion but only evidence for - with many claims for it to be “overwhelming”. The website Q&A and evidence sections are even worse - no questions even hinting at evidencial problems that have to be overcome.
I started this started in ***Were The Arawak Indians Polynesians? ** * (http://boards.straightdope.com/sdmb/showthread.php?t=235232) where some of the lines of evidence (DNA analysis, plant and animal species spread) overlap with the 1421 thesis.
The key bits of evidence I found convincing were the chart evidence and the strange isolated China-Peru linkages. Charts available in Europe with undiscovered coastlines and islands already marked on them - in the Americas, Southern Africa, Antarctica and Australia. Clearly someone had been there before and the Chinese sound a good bet.
The carved stones, Chinese “observation platform” pyramids, wreck and debris evidence I found inconclusive but remain open minded to fresh evidence.
Unconvincing I found, was that enough shipwrecked settlers, sailors, craftsmen, concubines etc could have made the DNA or species introduction impact, or cultural or skill transfer impact alleged out of one voyage - event of four or five different fleets totalling 800+ vessels. It sound impossible.
Finally with all this spectacular navigation and with the stated aim of bringing the whole world into the Chinese tribute system - the voyages as Menzies has them almost goes out of their way to avoid Europe the one place outside S and SE Asia where they **knew ** were other developed (semi-developed as Menzies would have it) countries. Sounds fishy?
Your pros and cons on various elements of evidence