Peter, I totally agree it's a fun tool, and educational in its way, but I strongly believe it needs to be accompanied with some large cautions. There's no way it should be relied on, as the actual path our ancestors took. At best, it could be considered a speculative center line of the possible migrations of the populations that included our ancestors. Each point on the path should more accurately be represented with very large ovals, but of course, that would be much less 'fun'. Our own ancestors took multiple paths (we all have a LOT of ancestors!), and some took paths along far northern routes and some took the opposite, and some may have at times traveled near that center line.
But I don't want to knock the tool too much, it's still a fun way to speculate visually on the path. And it is educational, in that it helps to see the many far places our ancestors have been, and the great distances they covered.
